{"id":47695,"date":"2020-12-26T17:34:18","date_gmt":"2020-12-26T17:34:18","guid":{"rendered":"https:\/\/atlantipedia.ie\/samples\/?p=47695"},"modified":"2020-12-26T17:38:53","modified_gmt":"2020-12-26T17:38:53","slug":"archive-4973","status":"publish","type":"post","link":"https:\/\/atlantipedia.ie\/samples\/archive-4973\/","title":{"rendered":"Archive 4973"},"content":{"rendered":"\n<p>Science and Catastrophism, from Velikovsky to the Present Day<br>Trevor Palmer<br>Emeritus Professor, Nottingham Trent University, UK<br>Abstract<br>In 1950, when the gradualist-uniformitarian paradigm was supremely dominant, as it had<br>been throughout the previous one hundred years, a new catastrophist scenario was launched<br>into the world by Immanuel Velikovsky, a Russian-born psychoanalyst, in Worlds in<br>Collision. This immediately received a hostile reception from the academic establishment,<br>with attempts being made to get the publication of the book withdrawn. Not only did it<br>challenge the prevailing uniformitarian paradigm by proposing that global catastrophes had<br>taken place in the relatively recent past, but it maintained that the causes had been<br>extraterrestrial (an almost unthinkable concept at that time) and, furthermore, this was argued<br>largely on the basis of myths and ancient writings. In addition, Velikovsky challenged wellestablished key beliefs in astronomy, physics, biology and ancient history, long after it had<br>become generally accepted that, because of an explosion in the amount of information<br>available, no-one could possibly be an expert in more than one subject area. Following on<br>from that, it was supposed that only those who were specialists in a particular area were<br>qualified to express views about topics within it, and Velikovsky, although well-educated,<br>was not recognised as an expert in any of the areas covered in Worlds in Collision.<br>One scientist who was sympathetic towards Velikovsky was Albert Einstein, who had known<br>him for many years. Although rejecting Velikovsky\u2019s proposed mechanism, which involved<br>close encounters with Venus and other planets, Einstein was convinced by his arguments that<br>there had been catastrophes of extraterrestrial origin. He emphasised to Velikovsky the<br>importance of making correct predictions, which would not in themselves establish a<br>scientific theory as being correct, but could play a significant part in the process. Velikovsky<br>predicted that Jupiter would be found to emit radio waves, which was confirmed shortly<br>before Einstein\u2019s death in 1955. A few years later, a statement in Worlds in Collision that the<br>surface of Venus would be found to be hot was similarly confirmed. In 1962, Science<br>published a letter from an astronomer and a physicist which pointed out Velikovsky\u2019s two<br>successful predictions, both completely against expectations, and continued by saying that<br>although the writers disagreed with Velikovsky\u2019s theories, they urged, in the light of this<br>development, that his ideas be given objective consideration. During the 1960s, a number of<br>statements and predictions by Velikovsky were confirmed, whereas others (sometimes but<br>not always because he had accepted the orthodox view of his time) were refuted. Velikovsky<br>had incorporated a range of theories within his complex scenario, so the fact that some of<br>them could be seen, in the light of subsequent developments, to be incorrect did not mean that<br>the rest could be discarded, or that because some of them turned out to be consistent with new<br>evidence, there was justification for concluding that the entire scenario must be correct. The<br>correct predictions did, however, provide a requirement for Velikovsky\u2019s overall scenario to<br>be given an objective examination, regardless of the unorthodox nature of its formulation, but<br>that failed to occur.<br>Up to this point, Velikovsky had operated as a lone individual. However, during the 1960s,<br>the efforts of political scientist Alfred de Grazia in producing a special issue of the journal,<br>American Behavioral Scientist, and then a book, The Velikovsky Affair, documenting the<br>unacceptable aspects of the reception given to Worlds in Collision and also the inherent<br>difficulties faced by anyone trying to bring forward an interdisciplinary hypothesis in the 20<br>th<br>century, played a significant part in the creation of a Velikovskian movement. Pens\u00e9e, the<br>magazine of the Oregon-based Student Academic Freedom Forum, published a special series<br>of 10 issues devoted to Velikovsky\u2019s ideas during the early 1970s, and there was a wellattended symposium in San Francisco in 1974 on the same theme, held under the auspices of<br>the American Association for the Advancement of Science. This was unsatisfactory in the<br>way it was conducted and in the way its presentations were reported, as acknowledged by<br>conventional scientists, who nevertheless maintained that Velikovsky\u2019s theories had been<br>considered and shown to be unsustainable.<br>This symposium proved to be a point of bifurcation for the Velikovskian movement. Some<br>seized on the imperfections of the process to maintain that Velikovsky\u2019s scenario had<br>emerged unscathed. Others acknowledged that there might have been justification in some of<br>the criticisms expressed about component details of Velikovsky\u2019s overall scenario.<br>Modifications were suggested to overcome perceived problems, but difficulties continued to<br>accumulate, as new findings came to light. Few aspects were rendered impossible, but many<br>began to seem improbable.<br>Alternative scenarios therefore began to be proposed, arising out of Velikovsky\u2019s original<br>ideas, but differing significantly in important details. Examples include the \u201cSolaria Binaria\u201d<br>model of Alfred de Grazia and Earl Milton, the \u201cSaturn theory\u201d of David Talbott, Dwardu<br>Cardona and Ev Cochrane, and the \u201ccoherent catastrophism\u201d model of Victor Clube and Bill<br>Napier.<br>Furthermore, conventional scientific views were becoming very different from what they had<br>been when Velikovsky was writing Worlds in Collision. Mechanisms, including<br>extraterrestrial ones, are now known to exist which could have caused major catastrophes on<br>Earth. Also, as suggested by Velikovsky, electromagnetic forces are now seen to be far more<br>important within the Solar System and its surroundings than previously supposed.<br>Investigations of Venus have shown it to be nothing like the \u201csister planet\u201d of the Earth<br>envisaged during the 1950s, and have revealed a number of anomalous features. More<br>widely, ongoing investigations of large-scale aspects of the Universe and of sub-atomic<br>structure are demonstrating unequivocally the serious limitations of the current state of our<br>knowledge and understanding.<br>Two conclusions seem to stand out. One is that, to address this complex situation, ways need<br>to be found to encourage interdisciplinary research into the various issues. The funding and<br>reporting systems operating in each specialist area work perfectly well in the majority of<br>situations, but are not geared to cope with interdisciplinary study, which is where most major<br>breakthroughs are likely to occur. The other conclusion is that evidence for global<br>catastrophes of extraterrestrial origin, at least in the prehistoric past, is now incontrovertible,<br>even though the effects are often downplayed (for psychological as much as for scientific<br>reasons). In the more recent past, similar considerations apply, although the evidence for an<br>extraterrestrial catastrophe is not so clear-cut. There is reason to suppose that significant<br>natural catastrophes occurred during the period considered in Worlds in Collision, although<br>not on the scale suggested by Velikovsky, and even more reason to suppose that major<br>catastrophes had taken place over the previous 10,000 years. However, opinions differ as to<br>likely cause of each of the catastrophic episodes.<br>Whatever views, positive or negative, may be held about particular aspects of Velikovsky\u2019s<br>theories, the general advice he offered to an audience of graduate students in 1953 remains<br>completely valid sixty years later: \u201cWhat I want to impress upon you is that science today, as<br>in the days of Newton, lies before us as a great uncharted ocean, and we have not yet sailed<br>very far from the coast of ignorance\u2026The age of basic discoveries is not yet at its end, and<br>you are not latecomers, for whom no fundamentals are left to discover\u2026I visualize some of<br>you, ten or twenty or thirty years from now, as fortunate discoverers, those of you who<br>possess inquisitive and challenging minds, the will to persist, and an urge to store knowledge.<br>Don\u2019t be afraid to face facts, and never lose your ability to ask the questions: Why? and<br>How? Don\u2019t be afraid of ridicule; think of the history of all great discoveries\u2026Therefore,<br>dare\u2026Don\u2019t persist in your idea if the facts are against it; but do persist if you see the facts<br>gathering on your side\u2026In science, unlike religion, the great revelations lie in the future; the<br>coming generations are the authorities; and the pupil is greater than the master, if he has the<br>gift to see things anew. All fruitful ideas have been conceived in the minds of the<br>nonconformists, for whom the known was still unknown, and who often went back to begin<br>where others passed by, sure of their way. The truth of today was the heresy of yesterday.<br>Imagination coupled with scepticism and an ability to wonder \u2013 if you possess these,<br>bountiful nature will hand you some of the secrets out of her inexhaustible store. The pleasure<br>you will experience discovering truth will repay you for your work; don\u2019t expect other<br>compensation, because it may not come. Yet, dare.\u201d<br>Introduction<br>Since this conference is being held on Naxos, a Greek island with strong echoes of the past,<br>the place where, according to tradition, Ariadne was abandoned by Theseus and rescued by<br>the god Bacchus, it seems appropriate to begin this contribution by quoting the final words of<br>\u201cOde on a Grecian Urn\u201d by the 19<br>th<br>century poet, John Keats:<br>\u201cBeauty is truth, truth beauty, &#8211; that is all ye know on earth, and all ye need to know.\u201d<br>Staying with the same theme, let us move rapidly forward to a professorial lecture I<br>introduced in Nottingham in February 2000. The lecture was given by a mathematician, Dave<br>Applebaum, now of Sheffield University, who began by saying that his aim was to<br>demonstrate the intriguing relationship between beautiful mathematics and physical<br>applications, using Paul Dirac\u2019s equation for relativistic electrons as a case study. He went on<br>to say that Dirac, a Nobel laureate, knew immediately that the equation he had formulated<br>must be correct because it looked so beautiful (Applebaum, 2000).<br>Again, in the field of molecular biology, clues about the structure of DNA, the main<br>component of genes, had been provided by analytical chemistry and X-ray crystallography,<br>but the actual details were determined by James Watson and Francis Crick using a process of<br>model-building. Watson and Crick were awarded the Nobel prize for showing that DNA had<br>a double-helix structure, and the beauty of the double-helix was a significant factor in<br>convincing them about the validity of their conclusions (Crick, 1990).<br>However, beauty is not always a guarantee of scientific truth. In one of his essays, the 19<br>th<br>century biologist, Thomas Huxley, referred to \u201cthe great tragedy of science \u2013 the slaying of a<br>beautiful hypothesis by an ugly fact\u201d (Huxley, 1893-4).<br>An example of this is the demise of the theory supported by most of the scientific<br>catastrophists of the 19<br>th<br>century, that of L\u00e9once \u00c9lie de Beaumont. On the basis of<br>observations made during geological fieldwork, \u00c9lie de Beaumont proposed that, if, as<br>generally supposed at the time, accepting the scenario proposed by the dominant naturalist of<br>the previous generation, the Comte de Buffon, the Earth had been gradually cooling since its<br>formation, natural shrinkage would have given rise to episodic large-scale disruptions of the<br>crust. During each of these intermittent upheavals, mountain-building would have taken place<br>because of \u2018wrinkling\u2019 of the Earth\u2019s crust, volcanoes would have erupted in many areas,<br>some former continental regions would have been flooded by sea-water, and many species<br>would have become extinct. It was a beautiful hypothesis, because of the grandeur and<br>plausibility of its overall vision, but, unfortunately, further investigations showed that<br>mountain-building had generally been a localised, not a world-wide, process, and unrelated to<br>episodes of species-extinction (Hallam, 1989, pp. 40-41, 56-57; Huggett, 1997, pp. 71-72, 84,<br>133). With the collapse of this theory, and the failure to find a replacement of similar<br>persuasive power, catastrophism became marginalised and widely dismissed as \u201cunscientific\u201d<br>during the latter part of the 19<br>th<br>century and much of the 20<br>th<br>(Hallam, 1989, pp. 52-60; James<br>and Thorpe, 1999, pp. 5-6; Palmer, 2003, pp. 55-59).<br>That was the context into which Immanuel Velikovsky introduced another powerful, wideranging catastrophist vision, seventy years after the death of \u00c9lie de Beaumont.<br>Origins of Velikovsky\u2019s catastrophist theories<br>The circumstances were quite remarkable. In April 1940, Velikovsky, a well-educated 45-year-old, who had been born in Russia into a prosperous Jewish family, was in the library of<br>Columbia University, New York, shortly after starting what was intended to be a brief<br>sabbatical from his work as a psychoanalyst in the state now known as Israel. He was<br>intending to write a book about Sigmund Freud and his heroes, addressing ideas raised by<br>Freud in his last work, Moses and Monotheism. Looking for material for a chapter about<br>Moses, Velikovsky searched for an Egyptian source that described the same catastrophic<br>events as the book of Exodus in his own faith, and came across one that seemed to meet the<br>requirements \u2013 the Admonitions of Ipuwer, translated in a publication by Alan Gardiner. As<br>noted by Gardiner, it was generally agreed on stylistic grounds that this had been written<br>during the Egyptian Middle Kingdom, which led Velikovsky to place the Israelite exodus<br>from Egypt within the chaotic period at the end of the Middle Kingdom, just before the fall of<br>the 13<br>th<br>Dynasty to Hyksos invaders, identifying these Hyksos as the Amalekites said to have<br>been encountered by the escaping Israelites. Velikovsky was aware that the traditional date of<br>the Exodus derived from time-spans given in the Hebrew Bible (the Old Testament of the<br>Christian Bible) was c. 1450 BCE, whereas orthodox Egyptologists placed the end of the<br>Middle Kingdom about two centuries earlier than that date, and the Exodus itself (if there had<br>actually been such an event, which many doubted) at c. 1250 BCE, during the New Kingdom.<br>Hence Velikovsky realised that his key linkage between Egyptian and Hebrew history, if<br>correct, necessitated a complete revision of Egyptian chronology from the Middle Kingdom<br>onwards. According to his own testimony, he had formulated the broad outlines of this<br>revised chronology by the summer of 1940 (Velikovsky, 1983, pp. 27-37).<br>In October of the same year, Velikovsky happened to read a passage in the book of Joshua<br>(chapter 10) which stated that large stones fell from the sky, after which the Sun stood still<br>for several hours. The thought struck him that if, as with the Exodus catastrophes, this was a<br>description of something that had actually occurred, then it should have been described in<br>other sources from around the world. Velikovsky soon found references to passages in Mayan<br>documents which described a similar catastrophe, in which debris fell from the skies and the<br>world burned, while the Sun stood still on the horizon. Indeed, a series of catastrophes was<br>mentioned, two of which were 52-years apart, as were (in approximate terms) the Exodus and<br>the event described in Joshua. The Mayan sources associated the catastrophes with names<br>generally identified with the planet Venus, with some of them referring to comet-like<br>characteristics, and indicating that the series of catastrophes began when this object first<br>appeared in the sky. On this basis, Velikovsky formulated the theory that Venus was not one<br>of the original planets of the Solar System, but appeared in recent times as a large comet, and<br>went on to have a series of close encounters with the Earth at approximately 52-year<br>intervals, affecting the rotation of our planet, striking it with electrical discharges and giving<br>rise to showers of rocks when the Earth passed through its cometary tail. Then, from<br>information obtained from other ancient sources over the following 18 months, Velikovsky<br>concluded that Venus went on to have close encounters with both Mars and our Moon, before<br>moving into the almost circular orbit around the Sun which it has today. As a consequence of<br>these encounters, Mars regularly threatened the Earth during the 7<br>th<br>and 8<br>th<br>centuries BCE,<br>the final occasion being in 687 BCE, after which Venus, Mars and the Earth settled into their<br>present orbits, keeping them well apart (Velikovsky, 1983, pp. 38-43).<br>To establish his priority for these ideas, Velikovsky wrote a 9-page summary of them in<br>November 1942 and attempted to have this accepted for secure keeping by the National<br>Academy of Sciences in Washington. He pointed out that his detailed arguments for a revised<br>chronology were ready for printing, under the title, A Chimerical Millennium, and a draft of<br>his arguments for cosmic revolutions, bearing the title, Worlds in Collision, had also been<br>written. Velikovsky\u2019s summary noted that the first encounter between the Earth and the<br>planet\/comet Venus had occurred in the 15<br>th<br>century BCE, expanding the orbit of the Earth<br>from one similar to that of Venus today, changing the direction and speed of the Earth\u2019s<br>rotation, and also bringing about a north-south reversal. The Earth\u2019s year, previously<br>consisting of 260 days, became one of 360 days, and. since the Moon\u2019s orbit had also been<br>affected, the length of the month increased from 20 days to 36. The next encounter, 50-52<br>years later, caused the Earth to stop rotating for a short time, but had no permanent effects.<br>Later, the close encounter with Mars in 687 BCE brought about a change in the Earth\u2019s orbit<br>and the angle of inclination of the terrestrial axis. The Earth\u2019s year shifted from 360 to 365\u00bc<br>days, and there was a reduction in the Moon\u2019s orbital period from 36 to 29 days.<br>Furthermore, before this succession of events, according to Velikovsky\u2019s interpretation of<br>ancient sources, the Earth had suffered previous catastrophes as a result of close encounters<br>with Saturn and then Jupiter, the former causing a great deluge. Velikovsky then went on to<br>devote the final few pages of this summary of his ideas to a series of claims that the way the<br>planets had behaved demonstrated that there was no such phenomenon as gravitation,<br>Newton\u2019s mathematical arguments being fallacious. In his view, electrical or electromagnetic<br>forces were responsible for all the attraction and repulsion occurring between bodies within<br>the Solar System, suggesting parallels between this and the nucleus\/electron system of an<br>atom. The curator of the Academy refused to accept the document, because there was no<br>precedent for the acceptance of a statement whose purpose was to establish intellectual<br>priority. Velikovsky therefore sought to establish his intellectual ownership of his ideas in a<br>different way, by means of a legal affidavit signed in December 1942, to which his statement<br>was attached (see http:\/\/www.varchive.org\/ce\/affidavit.htm).<br>Velikovsky decided to remain in America, developing his theories about chronological<br>revisions and cosmic catastrophes. He self-published two detailed summaries, Theses for the<br>Reconstruction of Ancient History (1945) and Cosmos without Gravitation (1946), sending<br>copies to libraries and to prominent scholars (Velikovsky, 1983, pp. 165, 319-320). In<br>Cosmos without Gravitation, Velikovsky extended the arguments he had made in the final<br>pages of his 1942 summary. He referred to an association between sunspots and the Sun\u2019s<br>magnetic field, but that was uncontroversial, because it had been demonstrated in 1908 by the<br>American astronomer, George Hale. Other claims, however, were contemptuously dismissed<br>by some readers of the document (http:\/\/www.varchive.org\/cor\/affair\/500220shatha.htm).<br>Velikovsky stated that, contrary to what was generally supposed, the Sun carried a net<br>negative electrical charge relative to the Earth, and all the other Solar System planets<br>similarly carried a net electrical charge. He continued: \u201cthe sun is an electromagnet; planetar y<br>motion is due to the electromagnetic force exerted on the planets by the sun. The planets as<br>charged bodies create magnetic fields by their rotation. It follows that (a) gravity, depending<br>on electrical charge, varies with the charge; (b) the masses of planets are inaccurately<br>calculated\u2026\u201d. If that message was in any way unclear, Velikovsky went on to reiterate,<br>\u201c\u2018Universal gravitation\u2019 is an electromagnetic phenomenon, in which the charges in the<br>atoms, the free charges, the magnetic field of the sun and the planets play their parts\u201d<br>(http:\/\/www.varchive.org\/ce\/cosmos.htm).<br>The notion that there could be some link between gravity and electromagnetism was not in<br>itself controversial. In 1850, the eminent physicist, Michael Faraday, had written, \u201cThe long<br>and constant persuasion that all the forces of nature are mutually dependent, having some<br>common origin, or rather being different manifestations of one fundamental power, has often<br>made me think that on the possibility of establishing, by experiment, a connection between<br>gravity and electricity\u2026\u201d He noted that he had tried to find such a link, but although so far<br>unsuccessful, his view on its possibility remained unchanged (Faraday, 1855).<br>Later, after Albert Einstein had blended his theory of special relativity with Newton\u2019s law of<br>universal gravitation in 1916 to form the theory of general relativity, be began attempts to<br>formulate a Unified Field Theory which could bring together general relativity and<br>electromagnetism (Einstein, 1950; Einstein, 1956; Porter, 1994). Efforts to develop an allencompassing theory of this nature continued after Einstein\u2019s death in 1955. There was thus<br>no controversy about the possibility of developing a unified theory that could encompass both<br>gravitation and electromagnetism, but Velikovsky was claiming that gravitation was simply<br>an electromagnetic phenomenon, influenced by electrical charges, which was a significantly<br>different concept.<br>Reactions to the publication of Velikovsky\u2019s catastrophist scenario<br>The first complete book by Velikovsky to appear in print was Worlds in Collision, published<br>in New York by Macmillan in 1950. This captured the imagination of the general public, and<br>quickly became the national number-one best-seller (Velikovsky, 1983, p. 113). The response<br>from professional scientists was considerably less positive, despite some actions taken by<br>Velikovsky to try to minimise controversy.<br>The book as published began with two chapters in which Velikovsky argued in general terms<br>that the Earth had suffered global catastrophes of cosmic origin in the past, before going on to<br>discuss his theories about cataclysmic episodes involving Venus and Mars. He had accepted<br>advice to keep things as simple as possible and leave discussion of earlier catastrophes<br>involving Saturn and Jupiter until a later book, merely alluding to these when saying that<br>Venus had been ejected as a comet from Jupiter (Velikovsky, 1983, p. 64). Again, he<br>responded to the antagonistic reaction of some physicists to his Cosmos without Gravitation<br>paper by deleting a chapter on this subject intended for the Epilogue of his book, particularly<br>because he had no quantitative solution to offer to the questions he had raised about the<br>conventional view of celestial mechanics (Velikovsky, 1983, pp. 76-79). Although he wrote<br>in the Preface &#8211; \u201cHarmony or stability in the celestial and terrestrial spheres is the point of<br>departure of the present-day concept of the world as expressed in the celestial mechanics of<br>Newton and the theory of evolution of Darwin. If these two men of science are sacrosanct,<br>this book is a heresy\u201d \u2013 he nevertheless maintained in the Epilogue: \u201cThe theory of cosmic<br>catastrophism can, if required to do so, conform with the celestial mechanics of Newton\u201d.<br>Nevertheless, as has been well-documented, there was a hostile response to the work from a<br>significant number of astronomers and physicists, some of whom were happy to acknowledge<br>that they were basing their views on second-hand reports, not having taken the trouble to read<br>the book themselves. Attempts were also made to suppress its publication, these being largely<br>coordinated by Harlow Shapley, Director of the Harvard Observatory (Velikovsky, 1983, pp.<br>80-135; Juergens, 1978a; Scranton, 2012, pp. 29-33).<br>On the other hand, a few eminent scientists, whilst remaining unconvinced about some of<br>Velikovsky\u2019s key proposals, found much to admire in his work, and wanted it to be given<br>serious consideration. One of these was Einstein, who had known Velikovsky since the<br>1920s, and now lived close to him in Princeton, New Jersey. After reading a draft of Worlds<br>in Collision, Einstein wrote to Velikovsky in July 1946 to say (when translated from the<br>German), \u201cThere is much of interest in the book which proves that in fact catastrophes have<br>taken place which must be attributed to extraterrestrial causes. However, it is evident to every<br>sensible physicist that these catastrophes can have nothing to do with the planet Venus\u2026\u201d<br>(http:\/\/www.varchive.org\/cor\/einstein\/460708ev.htm).<br>A few years after the publication of Worlds in Collision, Velikovsky was putting the finishing<br>touches to Earth in Upheaval, which he was writing in order to provide detailed geological<br>evidence of global catastrophes, and he asked Einstein for his comments on the typescript<br>drafts of chapters VIII-XII. Einstein wrote to Velikovsky in May 1954, giving constructive<br>criticisms, and also remarking that Shapley\u2019s behaviour with regard to Worlds in Collision<br>had been inexcusable, adding that it was typical of \u201cthe intolerance and arrogance together<br>with brutality which one often finds in successful people, but especially in successful<br>Americans.\u201d Einstein then went on to indicate that his own views on Velikovsky\u2019s theories<br>had changed very little over the previous eight years, writing, \u201cI can say in short: catastrophes<br>yes, Venus no\u201d (http:\/\/www.varchive.org\/cor\/einstein\/540522ev.htm).<br>Earth in Upheaval was published in New York by Doubleday in 1955. (The publication of<br>Velikovsky\u2019s books had been transferred from Macmillan to Doubleday because of Shapley\u2019s<br>threat of an academic boycott. Doubleday, unlike Macmillan, had no textbook division.) As a<br>supplement to this book, Velikovsky gave a revised version of an address entitled Worlds in<br>Collision in the Light of Recent Finds in Archaeology, Geology, and Astronomy, which he<br>had delivered to the Graduate College Forum of Princeton University in October 1953. In this<br>address, Velikovsky had said, \u201cIn Jupiter and its moons we have a system not unlike the solar<br>family. The planet is cold, yet its gases are in motion. It appears probable to me that it sends<br>out radio noises as do the sun and the stars. I suggest that this be investigated.\u201d<br>In June 1954, in a letter to Einstein, Velikovsky wrote, \u201cOf course, I am a heretic, for I<br>question the neutral state of celestial bodies. There are various tests that could be made. For<br>instance, does Jupiter send radio-noises or not? This can easily be found, if you should wish\u201d<br>(http:\/\/www.varchive.org\/cor\/einstein\/540616ve.htm). Einstein took no action but, by chance,<br>early in 1955, astronomers Bernard Burke and Kenneth Franklin of the Carnegie Institution,<br>who were scanning the sky in random fashion, searching for radio noises from faraway<br>galaxies, unexpectedly found a strong signal coming from Jupiter. This was reported at the<br>spring meeting of the Astronomical Society in Princeton. Very soon afterwards, in April<br>1955, Velikovsky pointed out the finding to Einstein, who was clearly embarrassed about the<br>situation, particularly because he had stressed at their previous meeting the importance for its<br>ultimate acceptance of a scientific theory being able to generate correct predictions, so he<br>asked what experiment Velikovsky would like to have carried out next. Perhaps surprisingly,<br>Velikovsky opted for radiocarbon tests to check his reconstruction of ancient history, and<br>Einstein assured him that these would be arranged (Velikovsky, 1983, pp. 289-295; see also<br>http:\/\/www.varchive.org\/bdb\/meeting.htm). However, a few days later, Einstein died from<br>the rupture of an aortic aneurysm. A copy of the German edition of Worlds in Collision was<br>found lying open on his study table (http:\/\/www.varchive.org\/bdb\/week.htm).<br>Tests of Velikovsky\u2019s theories<br>Velikovsky was very anxious for proper academic scrutiny to be given to the array of theories<br>making up his overall scenario (this scenario, although having a unifying vision, being far too<br>complex to be regarded as a single theory), and he saw prediction (which he preferred to call<br>prognostication) as a key part of that process. Einstein\u2019s remark that an important test of a<br>scientific theory was its ability to generate correct predictions was of course valid, but it may<br>be useful at this point to explain in a little more detail the principle Einstein was referring to,<br>and also place it in context. Criteria of specificity, relevance and discriminatory power all<br>have to be taken into consideration. To be of particular value, a prediction should be worded<br>in very specific terms, should be clearly derived from key aspects of a theory, and should be<br>capable of discriminating between that theory and others. If such a prediction proves to be<br>correct, it doesn\u2019t mean that the theory must be correct, but it provides a good reason for<br>giving it serious consideration, in the light of all available evidence.<br>It can never be said that a scientific theory has been proved to be correct, only that it provides<br>the best explanation of the totality of the evidence at a particular time. On the other hand, a<br>scientific theory can be disproved if it can be shown to be inconsistent with one or more<br>significant pieces of evidence. Reflecting that, the philosopher Karl Popper said that a theory<br>could only be regarded as a scientific one if it was capable of being tested and shown to be<br>false, should that be the case (Popper, 1959). Even so, it is rare for a theory to be<br>categorically disproved. Often, rival theories co-exist, with individual judgements being<br>made about which best fits the totality of the evidence.<br>In the situation where a particular theory has become well-established and achieved the status<br>of a paradigm, it ought to be the case, in an ideal world, that if a new, alternative theory is<br>formulated, then the new and the old theories are compared against the evidence in objective<br>fashion, and if the new one is seen to provide the best fit against the evidence as a whole, a<br>paradigm shift takes place. However, our world is peopled by human beings, with human<br>failings, so the reality is somewhat different. Commitment to a particular paradigm can make<br>a truly objective assessment of the evidence difficult, so, as pointed out by philosopher<br>Thomas Kuhn, a paradigm can have a restraining influence on thought, resulting in a long<br>period of stasis. Fine details might be modified on a regular basis, but the larger picture<br>remains essentially the same, with anomalous facts being ignored and allowed to accumulate,<br>perhaps until a new generation appears and looks at the situation with fresh eyes (Kuhn,<br>1962). The renowned German physicist, Max Planck, took a similar view, writing, \u201cA new<br>scientific truth does not triumph by convincing its opponents and making them see the light,<br>but rather because its opponents eventually die, and a new generation grows up that is<br>familiar with it\u201d (Planck, 1949). Thus, a new theory might be correct yet still struggle for a<br>long time to make progress towards general acceptance. However, it cannot be assumed that<br>the failure of a particular new theory to make progress is solely due to the constraining<br>influence of the existing paradigm. It might simply be incorrect.<br>It is particularly difficult to assess how Velikovsky fits into this picture, because he was in<br>effect a throw-back to the natural philosophers of the 18<br>th<br>century, such as Buffon (mentioned<br>previously) and his prot\u00e9g\u00e9 Lamarck, who had the misfortune to outlive his time. These<br>assembled all-encompassing scenarios, or \u201ccosmogonies\u201d, on the basis of the limited amount<br>of knowledge then available, including inputs from religion and mythology, and looked for<br>evidence to support them. As the knowledge-base snowballed during the 19<br>th<br>century, the<br>French catastrophist, Georges Cuvier, established the belief that this philosophical, generalist<br>approach was no longer meaningful, destroying his gradualist rival, Lamarck, in the process.<br>Then, with Cuvier\u2019s principles being carried forward into the English-speaking world by<br>Thomas Huxley and John Tyndall, science soon separated from religion and became<br>fragmented into academic disciplines, placing evidence before theory (Corsi, 1988;<br>Desmond, 1998; Palmer, 2003, pp. 9-32, 67-75). Velikovsky now seemed to be trying to<br>revert to the approach of the cosmogonists. However, regardless of approach, everything<br>should be viewed in the light of the evidence.<br>Even after the death of Einstein, Velikovsky still had some influential friends within the<br>scientific community, in particular Harry Hess, head of the department of geology at<br>Princeton University. Hess could not accept the scenario being proposed by Velikovsky, but<br>considered his arguments to be of great interest, and offered to help get some of his theories<br>tested. With the International Geophysical Year approaching, Hess agreed to put some<br>proposals to the committee on Velikovsky\u2019s behalf, since an approach by Velikovsky himself<br>was unlikely to be successful. Velikovsky\u2019s number one proposal was: \u201cMeasurement of the<br>strength of the terrestrial magnetic field above the upper layers of the ionosphere. It is<br>accepted that the terrestrial magnetic field \u2013 about one-quarter of a Gauss at the surface of the<br>earth \u2013 decreases with the distance from the ground, yet the possibility should not be<br>discounted that the magnetic field above the ionosphere is stronger than at the earth\u2019s<br>surface\u201d (Velikovsky, 1972). That followed on from comments Velikovsky had made in the<br>supplement to Earth in Upheaval, mentioned previously, where he wrote: \u201cIt is generally<br>thought that the magnetic field of the earth does not sensitively reach the moon. But there is a<br>way to find out whether it does or not. The moon makes daily rocking movements -librations of latitudes, which are explained by no theory. I suggest investigating whether<br>these unaccounted librations are synchronized with the daily revolutions of the magnetic<br>poles of the earth around its geographical poles\u201d. The committee agreed to carry out tests, as<br>part of the International Geophysical Year programme, to see if the Earth\u2019s magnetic field<br>permeated beyond the ionosphere, but in fact it was other tests which indirectly provided<br>evidence of such a field. Geiger counters were placed on board the Explorer 1, Explorer 3<br>and Pioneer 3 rockets in 1958 to enable James Van Allen investigate cosmic rays, and these<br>showed that there were two belts of energetic charged particles (subsequently known as the<br>Van Allen belts) around the Earth beyond the ionosphere, apparently held in place by the<br>Earth\u2019s magnetic field (Velikovsky, 1983, pp. 324-325). The outer belt stretched 60,000 km<br>into space, one-sixth of the distance to the Moon. Evidence that the Earth\u2019s magnetosphere<br>reached all the way to the moon was eventually obtained in 1964, when Norman Ness of the<br>Goddard Space Center installed a magnetometer in the IMP-I spacecraft (Ness, Scearce and<br>Seek, 1964).<br>In Cosmos without Gravitation, Velikovsky had written that the Sun possessed a net negative<br>electrical charge, but that view was generally dismissed. However, in 1960, physicist Victor<br>Bailey of the University of Sydney noted in the journal, Nature: \u201cIt has been found possible<br>to account for the known orders of magnitude of five different astronomical phenomena\u2026by<br>the single hypothesis that a star like the sun carries a net negative charge\u201d (Bailey, 1960).<br>Over the next few years, Bailey reported that measurements of interplanetary magnetic fields<br>by the space probes Pioneer 5, Explorer 10, Explorer 12 and Mariner 2 verified predictions<br>made on the basis of the hypothesis that the Sun carried a large net electrical charge (Bailey,<br>1963; Bailey, 1964). Sadly, Bailey died in 1964, on a journey to the United States to carry out<br>further tests on his hypothesis.<br>Another development came in 1961, when American radio-astronomers found the surface<br>temperature of Venus to be around 600\u00baF (Velikovsky, 1983, pp. 332-333). In a section<br>entitled \u2018The Thermal Balance of Venus\u2019, towards the end of Worlds in Collision, Velikovsky<br>had written, \u201cVenus experienced in quick succession its birth and expulsion under violent<br>conditions; an existence as a comet on an ellipse which approached the sun closely; two<br>encounters with the earth accompanied by discharges of potentials between these two bodies<br>and with a thermal effect caused by conversion of momentum into heat; a number of contacts<br>with Mars and probably also with Jupiter. Since all this happened between the third and the<br>first millennia before the present era, the core of the planet Venus must still be hot.\u201d<br>Velikovsky didn\u2019t specify exactly what he meant by \u201chot\u201d, but was clearly suggesting that<br>Venus must be significantly hotter than generally supposed. At that time, it was generally<br>considered that the surface temperature of Venus was only marginally higher than the<br>average surface temperature on Earth, significantly less than 100\u00baF. In 1940, astronomer<br>Rupert Wildt noted in the Astrophysical Journal that carbon dioxide had recently been<br>detected in the atmosphere of Venus, and went on to argue that the surface temperature of<br>Venus was therefore likely to be more than 200\u00baF because of a carbon-dioxide greenhouse<br>effect (Wildt, 1940), but that remained a minority view until the 1961 observations.<br>A joint letter from Princeton University physicist Valentine Bargmann and Columbia<br>University astronomer Lloyd Motz was published in the journal Science in December 1962.<br>This began, \u201cIn the light of recent discoveries of radio waves from Jupiter and of the high<br>surface temperature of Venus, we think it proper and just to make the following statement\u201d.<br>They then documented the statements made by Velikovsky which anticipated these two<br>findings, and also mentioned what had happened prior to the discovery of the Van Allen<br>belts. The letter concluded, \u201cAlthough we disagree with Velikovsky\u2019s theories, we feel<br>impelled to make this statement to establish Velikovsky\u2019s priority of prediction of these two<br>points and to urge, in view of these prognostications, that his other conclusions be objectively<br>re-examined\u201d (Bargmann and Motz, 1962).<br>Hess took a similar line to Bargmann and Motz, writing to Velikovsky in March 1963 to say,<br>\u201cWe are philosophically miles apart because basically we do not accept each other\u2019s form of<br>reasoning \u2013 logic. I am of course quite convinced of your sincerity and I also admire the vast<br>fund of information which you have painstakingly acquired over the years. I am not about to<br>be converted to your form of reasoning though it certainly has had successes. You have after<br>all predicted that Jupiter would have a high surface temperature, that the sun and other bodies<br>of the solar system would have large electrical charges and several other such predictions.<br>Some of these predictions were said to be impossible when you made them. All of them were<br>predicted before proof that they were correct came to hand. Conversely I do not know of any<br>specific prediction you made that has since been proven to be false. I suspect the merit lies in<br>that you have a good basic background in the natural sciences and you are quite uninhibited<br>by the prejudices and probability taboos which confine the thinking of most of us. Whether<br>you are right or wrong I believe you deserve a fair hearing\u201d (Velikovsky, 1972).<br>The irony was that a prediction by Velikovsky which soon turned out to be false was in an<br>area in which Hess had a special interest. Hess was a strong supporter of the theory of<br>continental drift, which was generally shunned by orthodox opinion at the time (Hellman,<br>1998), and Velikovsky went along with orthodoxy, trying, in Earth in Upheaval, to explain<br>phenomena such as the formation of the Himalayas in ways that ignored the possible<br>involvement of colliding continents. In chapter VIII of this book he wrote, \u201cThe land masses<br>of today do not change their latitudes; the motive force claimed is insufficient by far. Coal<br>beds in Antarctica and recent glaciations in temperate latitudes in the Southern Hemisphere<br>all conspire to invalidate the theory of wandering continents.\u201d In a letter to Ren\u00e9 Gallant (of<br>whom more later) written on 29 October 1962, Velikovsky predicted, \u201cThe Mohole project<br>will probably bring disappointment to the firm believers in Isostasy, and together with it, to<br>hypothesizers of continental drift\u2026\u201d. In fact, before the end of the decade, evidence had<br>arisen which led to the acceptance of continental drift, and the realisation that mountain<br>ranges such as the Himalayas had been formed as a consequence of collisions between<br>continental plates. Similarly, it became apparent that the drifting of some land-masses<br>towards the equator had given misleading indications that the magnetic poles were once far<br>away from where they are now (such indications having been taken by Velikovsky as<br>supporting evidence for his arguments that axial tilts had occurred during some episodes of<br>global catastrophe). Eventually, tests showed clearly that some continents were moving<br>relative to others at around ten centimetres per year (Stanley, 1986; Hallam, 1989, pp. 135-183; Redfern, 2000). Velikovsky was of course aware of this change of thinking, and when<br>Earth in Upheaval was republished in 1977, he tried to make the best of the situation by<br>writing a new Introduction, which included the sentence, \u201cMy position on continental drift<br>was (and is) intermediate between those who reject this concept and those who support the<br>idea.\u201d However, he couldn\u2019t un-write what he had previously written.<br>As with continental drift, Velikovsky similarly went along with the orthodox view of his time<br>that impacts by asteroids posed a negligible threat to life on Earth. It was thought that impact<br>craters should be oval in shape, indicating the direction of approach of the bolide, whereas,<br>apart from a few of very small size, all the craters found at the surface of the Earth were<br>circular, and contained no buried meteorites. On that basis, despite the finding of a few<br>meteorite fragments in the vicinity, the well-known Barringer crater in Arizona was thought<br>to have been formed by an explosion linked to volcanic activity. Similarly, the craters<br>observed on the surface of the Moon were circular, so were generally believed to be of<br>volcanic origin (Lewis, 1996; Steel, 2000, pp. 28-53; Palmer, 2003, pp. 135-137). This issue<br>was raised in exchanges of correspondence between Velikovsky and Ren\u00e9 Gallant referring<br>to the work of the French archaeologist, Claude Schaeffer, who had found evidence of<br>catastrophic destructions having occurred, often with indications of earthquakes and fire, at<br>sites throughout the Middle East on several occasions during the Bronze Age. One of these<br>was at the end of the Early Bronze Age, which coincided with the collapse of the Old<br>Kingdom in Egypt, and another was at the end of the Middle Bronze Age, when the Egyptian<br>Middle Kingdom collapsed (Earth in Upheaval, chapter XII). Velikovsky corresponded with<br>Schaeffer, and met him in Switzerland in 1957. As well as discussing catastrophes, he<br>presented the Frenchman with a copy of Ages in Chaos, the first volume of his revision of<br>ancient history, and he read it with interest (Velikovky. 1983, pp. 318-322). However,<br>Schaeffer formed the view that Velikovsky\u2019s revised chronology, although not impossible,<br>was improbable. Velikovsky commented to Gallant, \u201cI do not regard my reconstruction as<br>possible or probable but as correct\u201d (Velikovsky, 1959).<br>Gallant, a Belgian engineer and amateur geologist, was much more positive than Schaeffer<br>about Velikovsky\u2019s chronological revisions, but he disagreed with Velikovsky about the<br>causal mechanism of the Bronze Age catastrophes. Velikovsky, in part IV of the unpublished<br>In the Beginning, linked the catastrophes at the time of the collapse of the Egyptian Old<br>Kingdom to the planet Jupiter (http:\/\/www.varchive.org\/itb\/zedek.htm), and, as mentioned<br>previously, in Worlds in Collision he linked the catastrophes at the time of the collapse of the<br>Egyptian Middle Kingdom to the planet Venus, and later ones to the planet Mars, with<br>accompanying falls of asteroids (bolides) contributing a little additional misery. However,<br>Gallant considered it more likely that asteroid impact was the primary cause of these<br>catastrophes. In a letter to him dated 29 July 1962, Velikovsky wrote with polite displeasure,<br>\u201cBut with the bolides \u2013 one of the phenomena in the great catastrophes \u2013 and the only<br>important one in your understanding of them \u2013 we have a wall between us higher than the<br>wall of Jericho before it fell. At least would you have considered yourself as my opponent,<br>but you insist on regarding yourself as my follower. As to Ages I accept you as such, but I<br>disclaim you when the subject of worlds and Earth are considered.\u201d Gallant\u2019s book proposing<br>asteroid impacts as a cause of major catastrophes, Bombarded Earth, was published in<br>London by John Baker in 1964, but it received very little attention. It seemed an unlikely<br>scenario to almost everyone.<br>Associating himself with what at the time was the orthodox view, Velikovsky had written to<br>Gallant on 10 February 1960 to say, \u201cYou write that you are presently occupied with the<br>problem of the catastrophic past of the earth, and you look for formations similar to those on<br>the moon. Although hitting of the moon by large meteorites of the size of asteroids speaks for<br>the catastrophic theory, I am more inclined to believe that the moon formations arose in a<br>bubbling activity; the circular form of the formations requires a belief that the meteorites fell<br>all perpendicularly from all directions, otherwise there would be oval formations, unless the<br>meteorites exploded close to the lunar ground, never hitting the ground itself; but then we<br>need to assume a rather dense atmosphere on the moon.\u201d However, before the end of the<br>decade, the general belief in such a view was destroyed by the work of geologists such as<br>Gene Shoemaker. These, by detailed examination of terrestrial sites, coupled with simulation<br>experiments, demonstrated that most craters at the surface of the Earth had been caused by<br>explosions arising from extraterrestrial impacts. A bolide large enough to pass through the<br>atmosphere without being slowed down to any great extent would explode as it hit the<br>ground, the resulting crater being formed by the explosion and not by the actual impact, so it<br>would be circular and much larger in diameter than the impacting body (Albritton, 1989;<br>Heide and Wlotzka, 1995; Lewis, 1996). On the moon, the lack of an atmosphere would help,<br>not hinder, this process, so almost all lunar impacts would result in explosions and hence the<br>formation of circular craters. Calculations have shown that the 1.2 km diameter Barringer<br>crater (now also known as Meteor Crater) in Arizona was produced by an asteroid whose<br>diameter as it reached the Earth\u2019s surface was less than 100 metres, yet the collision released<br>energy equivalent to 2.5-25 megatons of TNT (depending on the velocity of impact), 150-1,500 times greater than the explosion of the atomic bomb over Hiroshima in 1945 (Lewis,<br>1996; Steel, 2000, pp. 52-53; Melosh and Collins, 2005).<br>So, asteroid impacts had the potential to devastate cities and entire regions, but of course it<br>did not follow that they actually had caused the apparent catastrophic destructions of the<br>Bronze Age. No impact crater of any significant size could be dated to that period, the<br>Barringer crater being assigned a date tens of thousands of years earlier. Larger craters<br>indicating impacts powerful enough to cause devastation on a world-wide scale were found<br>dating from even earlier periods, but it was believed that even these had produced little effect<br>on the course of life on Earth. Although the fossil record seemed to show that there were<br>times when mass extinctions of species had taken place, this was dismissed by some as a<br>geological artefact. Regardless of that, the prevailing gradualist-uniformitarian paradigm<br>remained untroubled, the view being taken throughout the 1960s and beyond that the same<br>Darwinian processes had operated, in the same way, throughout the course of evolution, and<br>as conditions gradually fluctuated, it was inevitable that there would be times when the<br>turnover of species was greater than at other times (Mayr, 1970; Stebbins, 1982; Palmer,<br>2003, pp. 133-134, 146-148). We started with a quotation from Keats, and a passage from his<br>poem Hyperion is appropriate here: \u201cSo on our heels a fresh perfection treads, a power more<br>strong in beauty, born of us and fated to excel us\u2026for \u2018tis the eternal law that first in beauty<br>shall be first in might.\u201d Keats was writing about the overthrow of the Titans by the Olympian<br>gods in Greek mythology, but his words provide a good description of traditional Darwinian<br>evolution, if \u201cbeauty\u201d is taken to mean a harmonious adaptation to the environment. A similar<br>view was taken of events which took place during the historical period, for it was generally<br>believed that, despite the findings of Schaeffer, civilisations came to an end not because of<br>sudden natural catastrophes but as a result of gradually changing circumstances, or because of<br>conquest by an invading army, or a combination of the two (James and Thorpe, 1999, pp. 2-6;<br>Schoch, 1999; Palmer, 2003, pp. 119-120).<br>Another area where Velikovsky\u2019s claims were not substantiated by developing evidence was<br>in regard to his belief that there was no such thing as gravitation, with Newton\u2019s formulation<br>of the law of gravity being fallacious. In the document attached to his 1942 affidavit,<br>Velikovsky wrote, \u201cAs the computation concerning the Moon caused Newton to postulate a<br>general law concerning the whole solar system and the whole Universe, it, the law of<br>gravitation is wrong in all its applications. Velocities and masses computed with its help are<br>probably wrong in many instances.\u201d Einstein, in his theory of special relativity, had<br>introduced modifications to Newton\u2019s laws of motion, but these only came into effect at<br>velocities approaching the speed of light. Similarly, in his theory of general relativity, which<br>linked special relativity to gravitation, he had introduced modifications to Newton\u2019s law of<br>gravitation, but these only applied under conditions where gravitational fields were<br>exceptionally strong (Bronowski, 1973; Matthews, 1992, pp. 157-159, 190-197; Porter,<br>1994). Otherwise, Newtonian mechanics, uniting Newton\u2019s laws of motion with his law of<br>gravitations, were still considered valid, and this was demonstrated to be the case during the<br>1960s. In this decade, Russians and Americans alike had used straightforward Newtonian<br>mechanics to direct spacecraft to other bodies within the Solar system and in some instances<br>then bring them back to Earth. Examples included Luna 9, which made the first soft landing<br>on the Moon in 1966, Venera 4, whose probe sent back information about the atmosphere of<br>Venus as it parachuted through it in 1967, and Apollo 11, which made the first manned<br>landing on the Moon in 1969 (Couper and Henbest, 1985; Moore, 1986; McNab and<br>Younger, 1999, pp. 49-61, 170-172).<br>On the other hand, if Velikovsky was wrong to reject Newton\u2019s law of gravity in the way that<br>he did in the 1942 summary of his ideas, his claim in the same document that electrical and<br>electromagnetic forces played a far greater role in the Solar System than generally supposed<br>at that time can be seen to have much validity. So, for example, English physicists Edward<br>Appleton and Stanley Hey demonstrated in 1946 that solar radio noise originates in the<br>vicinity of active regions associated with sunspots, and they also found that sudden large<br>increases in the Sun\u2019s radio output are associated with solar flares (Lang, 2009). Later, as<br>already mentioned, the Van Allen belts were discovered around the Earth, consisting of<br>energetic charged particles, i.e. plasma, held in place by a magnetosphere which stretched far<br>into space. Also, albeit in more indirect and inconclusive fashion, Bailey, in an attempt to<br>explain certain astronomical observations, had put forward the hypothesis that the Sun carried<br>a large net electrical charge and, on the basis of this, made predictions about interplanetary<br>magnetic fields which were consistent with measurements made by subsequent space probes.<br>So, by the 1960s, an objective assessment of the situation would have to be that Velikovsky<br>had sometimes been wrong in company with the orthodox scholars of his time, and<br>sometimes wrong in opposition to them, but he had also made claims and predictions which<br>turned out to be correct, completely against the expectations of most, or perhaps at times even<br>all, professional scientists. Because of the wide range of theories which linked to form his<br>overall scenario, the fact that some of them could be seen, in the light of subsequent<br>developments, to be wrong did not mean that the rest could be discarded. Conversely, the fact<br>that some of them subsequently turned out to be consistent with new evidence did not provide<br>a justification for jumping to the conclusion that all of them must be correct. However, as<br>Bargmann and Motz had argued in their letter published in Science in 1962, the correct<br>predictions provided a strong reason for giving serious objective consideration to all aspects<br>of Velikovsky\u2019s catastrophist model. Velikovsky followed this up by submitting a paper to<br>Science which attempted to show that the points referred to by Bargmann and Motz were just<br>a few of those now supported by independent research, but this was rejected for publication,<br>whereas a facetious letter saying that \u201cthe accidental presence of one or two good apples does<br>not redeem a spoiled barrelful\u201d was printed. Velikovsky\u2019s attempts to provide a response to<br>critical articles and reviews in other journals were similarly unsuccessful (Juergens, 1978a<br>and 1978b). It was now the mid 1960s, 15 years or so after the publication of Worlds in<br>Collision, and there had still been no proper debate about the book\u2019s contents.<br>Some belated progress<br>Although Velikovsky had sympathetic friends, including prominent scientists such as<br>Einstein and Hess, he had, up to 1963, operated essentially as a lone individual. Then he<br>came into contact with Alfred de Grazia, who at that time was Professor of Social Theory at<br>New York University and editor of the journal, American Behavioral Scientist. Looking back,<br>de Grazia wrote in 1984 in his book, Cosmic Heretics, \u201cAlfred de Grazia was entering his<br>forty-fourth year when he met a self-styled cosmic heretic, Immanuel Velikovsky, who was<br>already sixty-seven, and for the next twenty years a wide band of life\u2019s spectrum was colored<br>by their relationship\u201d (de Grazia, 1984, p. 10). Despite being generally well-informed and an<br>avid reader, de Grazia had never heard of Velikovsky until shortly before their meeting, but<br>when he became aware of the details of the hostile reception given to Velikovsky\u2019s ideas, he<br>decided immediately to devote a special issue of the American Behavioral Scientist to this<br>topic. At this point, de Grazia considered it possible that, despite their unacceptable<br>behaviour, Velikovsky\u2019s critics might have been making valid points. However, when he read<br>Worlds in Collision, he became convinced by Velikovsky\u2019s arguments that catastrophes of<br>extraterrestrial origin had produced very significant effects on the Earth and its inhabitants in<br>the geologically-recent past (de Grazia, 1984, pp. 10-24). Two decades later, he went on to<br>term this \u201cquantavolution\u201d, i.e. evolution by quantum leaps (de Grazia, 1981, pp. 10-16).<br>Early in 1963, the plans for a special issue of the American Behavioral Scientist, which was<br>to include an article on Velikovsky\u2019s prognostications, stimulated Velikovsky to approach<br>journalist Eric Larrabee, who had written a sympathetic article about Worlds in Collision in<br>Harper\u2019s Magazine in 1950, to write another one about the successful predictions, and this<br>was published within a few months. Once again, though, there was a hostile reaction from<br>some professional scientists, particularly Donald Menzel, who occupied the post formerly<br>held by Shapley, Director of the Harvard Observatory, and behaved exactly like his<br>predecessor towards Velikovsky (Juergens, 1978b).<br>In contrast to the article in Harper\u2019s, the special issue of the American Behavioral Scientist,<br>published a month later in September 1963, was generally well-received, and formed the<br>basis of a book called The Velikovsky Affair. This was edited by de Grazia and published by<br>University Books of New York in 1966. It proved to be a significant catalyst in stimulating<br>consideration of the theories presented in Worlds in Collision. The number of people<br>interested in Velikovsky\u2019s theories began to grow, in Europe as well as in America, due to a<br>reaction against the intolerant attitude of establishment scientists brought to the public\u2019s<br>attention in The Velikovsky Affair, as well as by the positive features of his own books (de<br>Grazia, 1984, pp. 90, 264-265).<br>Also, the collaborative work carried out for the special issue of the American Behavioral<br>Scientist encouraged Velikovsky to see the potential benefits of involving teams of helpers in<br>his activities. Warner Sizemore, a Professor of Religion at Glassboro State College, New<br>Jersey, organised a loose network of supporters, who operated under the umbrella title,<br>Cosmos and Chronos, holding local meetings and sending out responses to criticisms of<br>Velikovsky\u2019s ideas. Velikovsky was re-invigorated by the existence of such groups, but had<br>little direct contact with them (de Grazia, 1984, pp. 263-264).<br>In May 1972, David and Stephen Talbott, brothers who published and edited Pens\u00e9e, the<br>magazine of the Student Academic Freedom Forum based in Portland, Oregon, brought out<br>the first of what was to be a 10-issue special series giving consideration to the works of<br>Velikovsky over a period of 2\u00bd years, the individual issues being numbered IVR (Immanuel<br>Velikovsky Reconsidered) I \u2013 X. After the publication of the first issue, the astronomer and<br>atmospheric physicist, Walter Orr Roberts, approached Stephen Talbott to suggest a<br>symposium on the subject of Velikovsky\u2019s theories. This eventually took place in San<br>Francisco in February 1974, under the auspices of the American Association for the<br>Advancement of Science (AAAS), and was entitled \u201cVelikovsky\u2019s Challenge to Science\u201d<br>(Pens\u00e9e IVR VII, 1974, pp. 23-30; Goldsmith, 1977). To an audience of more than a thousand<br>people, Velikovsky began his presentation by emphasising that it was conventional science<br>he was challenging, not science itself, and went on to point out his successful<br>prognostications (Velikovsky, 1974). The main opponent of his ideas at the symposium was<br>the Cornell University astronomer, Carl Sagan. He maintained that \u201cin Worlds in Collision<br>there is not a single correct astronomical prediction made with sufficient precision for it to be<br>more than a vague lucky guess\u201d, and he drew attention to ten particular areas where he said<br>the claims made by Velikovsky could be shown to be false (Sagan, 1977).<br>After the symposium, and the publication by Cornell University Press of the anti-Velikovsky<br>papers in a volume entitled, Scientists Confront Velikovsky (the pro-Velikovsky papers being<br>published in Pens\u00e9e IVR VII), professional scientists generally considered that Velikovsky\u2019s<br>scenario had now been given appropriate consideration and found to be unsustainable.<br>Nevertheless, some acknowledged, while maintaining that it didn\u2019t affect the overall<br>conclusions, that Sagan had made several mistakes and had also used unfair tactics in his<br>presentation (Jastrow, 1985). Looking back over the 50 years since the publication of Worlds<br>in Collision, NASA astronomer David Morrison, in an article in Skeptic magazine, accepted<br>that, while most of the ten problems raised by Sagan against Velikovsky\u2019s scenario were<br>valid, Sagan had on occasions attacked models which were not necessarily identical to the<br>ones Velikovsky had in mind, and his use of rough-order-of-magnitude calculations<br>sometimes gave an exaggerated impression of the weakness of aspects of Velikovsky\u2019s<br>scenario (Morrison, 2001).<br>So, Velikovsky\u2019s theories had finally received a high-profile public hearing, but the meeting<br>had consisted largely of highly-polarised presentations. There was little or no constructive<br>discussion as to whether there might have been merit in any of Velikovsky\u2019s challenges to<br>conventional science (de Grazia, 1984, pp. 347-351). In that respect, nothing had really<br>changed.<br>Fragmentation of the Velikovskian movement<br>Following the AAAS symposium of 1974, many of Velikovsky\u2019s supporters seized on the<br>dubious scholarship of Sagan and took it as justification for believing that none of the<br>criticisms expressed about Velikovsky\u2019s theories had any substance. However, as<br>documented by de Grazia in Cosmic Heretics, this symposium was to be a point of<br>bifurcation for the Velikovsky movement. The followers of Velikovsky, like conventional<br>scientists, were human beings, so a similar range of behaviour was only to be expected. These<br>cosmic heretics may all have accepted the three key points listed by Velikovsky in the<br>Preface to Worlds in Collision: (1) that there were physical upheavals of a global nature in<br>historical times; (2) that these catastrophes were caused by extraterrestrial agents; and (3) that<br>these agents can be identified\u201d, but that still left plenty of scope for disagreement (de Grazia,<br>1984, pp. 315-388).<br>Initially, the choice had seemed to be a straightforward one between the conventional view as<br>it existed at the time and Velikovsky\u2019s catastrophist scenario, with those opting for the latter<br>generally accepting the full package as presented in Worlds in Collision. Inevitably,<br>therefore, this became established as something akin to a paradigm amongst Velikovsky\u2019s<br>followers. To Velikovskians and conventional scientists alike, the AAAS debate was seen<br>essentially as an all-or-nothing contest between two rival scenarios. Afterwards, it was not<br>surprising that some cosmic heretics found justifications for keeping their original beliefs<br>intact. Others, however, began to consider the possibility that there might have been<br>justification for at least some of the criticisms raised by Sagan and others, for no wideranging scenario, whatever the brilliance of the overall vision, was likely to be correct in<br>every detail, and much had been discovered in the 25 years since the publication of Worlds in<br>Collision. According to de Grazia, the most effective scientific criticisms of Velikovsky came<br>from those who were sensitive to his work, and such criticisms came as part of a positive<br>process (de Grazia, 1984, p. 330). Modifications to Velikovsky\u2019s scheme began to be<br>suggested, to eliminate aspects that seemed particularly problematical, and eventually this led<br>to the creation of alternative catastrophist models, albeit ones arising out of Velikovsky\u2019s<br>original ideas.<br>These developments were unwelcome to many traditionalist Velikovskians, for whom the<br>journal Kronos became an important medium for the expression of their views. Kronos was<br>set up in 1975, with the active involvement of Velikovsky, after the appearance of the last of<br>the special Velikovsky issues of Pens\u00e9e, with Lewis Greenberg, a Philadelphia art historian,<br>as editor-in-chief, and Warner Sizemore as executive editor (de Grazia, 1984, pp. 93-94).<br>Velikovsky, now in his 80<br>th<br>year, still welcomed debates, but his main concern was the<br>establishment of his own ideas, and he expected his supporters to concentrate on the<br>achievement of that aim. In the words of de Grazia, Velikovsky \u201cwould have been outraged if<br>any of his circle, and certainly Kronos, would have assayed to count him as only a leading<br>figure among cosmic heretics, rather than their raison d\u2019\u00eatre\u201d (de Grazia. 1984, p. 62). In<br>1977 and 1978, Kronos devoted two special issues (volumes III:2 and IV:2) to providing<br>responses to criticisms of Velikovsky\u2019s theories made at the AAAS symposium, these being<br>entitled Velikovsky and Establishment Science and Scientists Confront Scientists who<br>Confront Velikovsky.<br>The Society for Interdisciplinary Studies (SIS), founded in the UK in 1974, had a more open<br>agenda, its stated objective being simply to \u201cpromote the active consideration\u2026of alternatives<br>to the theory of uniformity\u201d. It was, nevertheless, formed essentially to provide a forum for<br>debates about Velikovsky\u2019s ideas, and its members, from the start, were generally<br>sympathetic to Velikovsky. However, a wide range of ideas and opinions were presented in<br>its main journal, the SIS Review, later renamed Chronology and Catastrophism Review (de<br>Grazia, 1986, pp. 90-97, 99-100; Tresman, 1993; Tresman, 2000).<br>In these and other journals, and at meetings, discussions took place about the relative merits<br>of the various modifications and alternatives being proposed to Velikovsky\u2019s original<br>theories. Once again, as with the actions of conventional scientists, these discussions, since<br>they involved human beings, were not always conducted as objectively and fairly as ought to<br>have been the case. In Cosmic Heretics, de Grazia wrote, \u201cWhat has been shown here is that<br>the establishment has violated most rules of logic and fair play in literary and scientific<br>intercourse, but, further, I have shown that the heretics, in dealing with the outer world and<br>among themselves, have also violated most rules of logic and fair play in their literary and<br>social intercourse\u201d (de Grazia, 1984, p. 386).<br>However, let us concentrate on the ideas and the evidence, in going on to consider<br>developments relating to some aspects of Velikovsky\u2019s theories, from the time of the AAAS<br>symposium to the present day.<br>Venus<br>At the AAAS symposium in 1974, the first of Sagan\u2019s ten major objections to Velikovsky\u2019s<br>scenario was that Venus could not have been ejected from Jupiter, because there was no<br>mechanism by which a body the size of Venus could have achieved the escape velocity<br>necessary to break free from the gravitational bonds of the giant planet (Sagan, 1977).<br>Morrison, in his Skeptic article, gave this as an example of poor scholarship, because Sagan<br>had only considered the ejection of Venus from Jupiter without the involvement of any other<br>cosmic body, which was probably not what Velikovsky had in mind. Sagan had also used an<br>incorrect value for the escape velocity of Jupiter, although that did not affect the overall<br>conclusions (Morrison, 2001).<br>Laird Scranton, an American software designer, suggested in his 2012 book, The Velikovsky<br>Heresies, that Velikovsky had pointed out in Worlds in Collision the fact that, according to<br>Greek mythology, Zeus devoured Metis, the pregnant mother of Pallas Athena, after which<br>Pallas Athena sprang fully-armed from the head of Zeus. According to Scranton, Velikovsky<br>concluded from this myth that a cosmic body (Metis) had struck and apparently been<br>absorbed by Jupiter (Zeus), which caused Venus (Pallas Athena) to be ejected (Scranton,<br>2012, pp. 22-23). In fact, Velikovsky had never mentioned Metis, either by name or<br>description, but since he derived the theory of the ejection of Venus out of Jupiter from myths<br>such as the birth of Pallas Athena, Scranton may have assumed the events prior to her birth to<br>have been implied. What is certain is that Velikovsky wrote, in Kronos \u201cIn my reconstruction<br>of the past the fission of Jupiter followed, though not immediately, from close encounters<br>between the giant planets Jupiter and Saturn, followed by a collection by Jupiter of the spread<br>matter of Saturn\u201d (Velikovsky, 1977). Since there could be an unlimited range of<br>specifications for collisions of debris from Saturn with Jupiter in the theoretical scenario<br>outlined by Velikovsky, it obviously cannot be concluded with certainty that none of them<br>would have resulted in the ejection from Jupiter of an object the size of Venus.<br>Further considerations involving escape velocity apply to Velikovsky\u2019s theory that the object<br>which became the planet Venus left Jupiter as a comet. In part I chapter II of Worlds in<br>Collision, Velikovsky wrote that red dust, followed by gravel, fell on Egypt as the Earth<br>entered deeper into the tail of this comet at the time of the Exodus. Five chapters later, he<br>stated that stones from the same cometary tail fell on the Canaanites in the days of Joshua. It<br>has now been established that cometary tails are formed by the evaporation of volatile<br>material from the nucleus as it passes close to the Sun, with non-volatile material such as dust<br>and gravel being carried along with the escaping gases. Typical comets, with nuclei a few<br>kilometres in diameter, have two tails, one consisting of the gases, which are ionised (i.e.<br>electrically charged), this tail always pointing directly away from the Sun, and the other<br>consisting of dust, gravel and perhaps larger stones, this tail trailing behind the comet in its<br>orbit, and normally appearing as the more spectacular of the two (Burnham, 2000; Steel,<br>2000, pp. 74-75; Man, 2001). A comet the size of Venus, i.e. one very much larger than a<br>typical comet, could still have an ion tail, but not one containing dust and larger solid<br>material, because the evaporation process could not possibly raise it to a speed in excess of<br>37,000 km\/hr, the escape velocity necessary for solids to escape the gravitational constraints<br>of a body like Venus. Thus, the possibility that Venus once had a cometary tail cannot be<br>excluded, but it would not have been a particularly conspicuous one, and it could not have<br>contained dust, gravel and stones to deposit on the Earth.<br>Charles Ginenthal, who began to publish the journal The Velikovskian in 1993, claimed in the<br>following year that Velikovsky had never said that Venus had begun its existence as a comet.<br>Ginenthal wrote, \u201cVenus was never a comet! It was, as Velikovsky proposed, an incandescent<br>planet that looked like a comet on a cometary orbit\u201d. He added, \u201cAlthough Venus could have<br>some cometary material or comets in orbit around it, it was never a comet, based on<br>Velikovsky\u2019s theory\u201d (Ginenthal, 1994). In fact, Velikovsky stated, without qualification, in<br>Worlds in Collision (part I chapter VIII), \u201cDuring the centuries when Venus was a comet, it<br>had a tail\u201d. However, regardless of what Velikovsky actually wrote, we cannot entirely<br>exclude the possibility that there was a cloud of dust, gravel and stones following Venus,<br>which may have looked like a cometary tail, even though it could not have been thrown out<br>from the planet.<br>In the \u201cSaturn Theory\u201d developed during the 1980s by David Talbott and colleagues from the<br>initial ideas of Velikovsky (and to which we shall return later), Venus was no longer thought<br>to have been ejected from Jupiter as a comet, nor to have been a newcomer to the Solar<br>System at the dawn of civilisation. As the theory developed, it was argued that the comet-like<br>appearance of the planet inferred from ancient writings and depicted in rock-art images was<br>the result of the discharge of plasma streamers, this relating to a period much earlier than the<br>time of Velikovsky\u2019s supposed Venus catastrophe (Talbott and Cochrane, 1984; Cochrane,<br>1988; Talbott, 2008).<br>Scranton, in The Velikovsky Heresies, returned to Velikovsky\u2019s original model and suggested<br>that the ionotail of Venus, discovered in 1997, was a \u201cremnant cometary tail\u201d (Scranton,<br>2012, pp. 116-117). Like the ion tail of a comet, the ionotail of Venus points away from the<br>Sun, but that is hardly surprising, because the mechanism is much the same, the effect of the<br>solar wind (the stream of charged particles ejected by the Sun) on the ions being released by a<br>comet in one case and the ionosphere of a planet in the other. Mars and Titan (a satellite of<br>Saturn) have similarly been shown to have ionotails. Scranton also argued that the discovery<br>in 2008 of hydroxyl radicals in the atmosphere of Venus could be an indication of the<br>planet\u2019s cometary origin, because hydroxyl radicals are known to be present in the coma of<br>comets, formed from water by solar UV radiation (Scranton, 2012, pp. 113-114). In fact the<br>reason the European Space Agency were looking for hydroxyl radicals in the atmosphere of<br>Venus in 2008 was because they had previously been found in the outer atmosphere of the<br>Earth, formed by the action of ozone. A link with comets seems unlikely.<br>At the AAAS symposium, Sagan outlined another of his major objections to Velikovsky\u2019s<br>scenario as follows: \u201cThe idea that Venus could have been converted, in a few thousand<br>years, from an object in a highly elongated or eccentric orbit to its present orbit, which is \u2013<br>except for Neptune \u2013 the most nearly perfect circular orbit of all the planets, is at odds with<br>what we know about the three-body problem in celestial mechanics. However, it must be<br>admitted that this is not a completely solved problem and that, while the odds are large, they<br>are not absolutely overwhelming against Velikovsky\u2019s hypothesis on this score. Further,<br>when Velikovsky invokes electrical or magnetic forces, with no effort to calculate their<br>magnitude or describe in detail their effects, we are hard pressed to assess his ideas\u201d (Sagan,<br>1977). That, despite the confrontational tone, remains a fair assessment of the situation.<br>In 1972, Ralph Juergens, a retired civil engineer, who had written the historical account in<br>The Velikovsky Affair of the reception given to Worlds in Collision, attempted to reconcile the<br>fact that planets and other bodies moved within the Solar System entirely in accord with<br>Newtonian mechanics (as by this time had been clearly established) with Velikovsky\u2019s belief,<br>for which he saw much evidence, that the Sun and planets were electrically charged. Juergens<br>proposed that each planet was surrounded by a space-charge sheath, which would insulate the<br>planet\u2019s electrical charge, so only on close approach, when the sheaths would be disrupted,<br>would electrical interactions take place between the planets (Juergens, 1972). That<br>mechanism could not, however, help to explain how Venus had moved so quickly into a<br>circular orbit.<br>Eric Crew, a British electrical engineer, was enthused by Velikovsky\u2019s arguments about the<br>importance of electricity in the Solar System, and his talks and articles on this subject were a<br>regular feature in the early days of the SIS. He developed a computer program to see if was<br>possible, if Juergens\u2019 proposed space-charge sheath insulation could be disregarded, for<br>Venus to move into an almost circular orbit in the timescale required by Velikovsky\u2019s theory,<br>on the assumption that the Sun had a constant charge but the charge on Venus gradually<br>leaked away. His model showed that there could be a significant move towards<br>circularisation, but by no means enough, within this timescale (Crew, 1988).<br>Australian computer systems engineer, Wal Thornhill, who (as we shall see later) played a<br>major role in taking forward Velikovsky\u2019s concept of an electrical universe, acknowledged in<br>1998 that there were serious problems in explaining a rapid change in the orbit of Venus to its<br>present one by the laws of physics as currently understood. He added, however, that because<br>of the strength of the mythological evidence, \u201cit is time to re-examine those \u2018laws\u2019, or long<br>held beliefs that have diverted scientific curiosity away from uncomfortable questions about<br>the safety of our spaceship Earth\u201d (Thornhill, 1998).<br>Regardless of timescale, British mathematician, Laurence Dixon, showed that considerations<br>of the principles of conservation of energy and angular momentum demonstrated that it<br>would have been possible for Venus to have moved to its present orbit following encounters<br>with the Earth and Mars, but, assuming the masses of the planets remained constant, only if<br>the first contact took place when the Earth was in an orbit in which its average distance from<br>the Sun was around half of what it is now (Dixon, 2001). That is roughly consistent with<br>what Velikovsky wrote in his 1942 summary, but, as currently understood, it would have put<br>the Earth\u2019s position at the time well outside of the \u201chabitable zone\u201d, where water could exist<br>in liquid form at the surface of the planet (Fogg, 1992; Kasting, Whitmire and Reynolds,<br>1993; Weed, 2002). Neither human beings nor any other animal life could have existed under<br>those conditions.<br>Another of Sagan\u2019s \u201cten problems\u201d related to the composition of the clouds of Venus. When<br>Velikovsky wrote Worlds in Collision, it was already established that a significant component<br>of the atmosphere of Venus was carbon dioxide, but, in part II chapter IX of the book,<br>Velikovsky argued, on the basis of other indications, \u201cI assume that Venus must be rich in<br>petroleum gases. If and as long as Venus is too hot for the liquefaction of petroleum, the<br>hydrocarbons will circulate in gaseous form\u201d. Reports from the American Mariner 2 mission<br>to Venus appeared to confirm this in 1962, but Sagan claimed that the reports had been based<br>on a misunderstanding. Lewis Kaplan of the Jet Propulsion Laboratory, the spokesperson at<br>the post-mission press conference, had been trying to explain how the findings fitted in with<br>the new theory that the high surface temperature of Venus could be due to a runaway<br>greenhouse effect, and he said there was an information gap about what atmospheric<br>component could be absorbing radiation in the vicinity of 3.5 microns (micrometres). One<br>solution to the problem would be the presence of hydrocarbons, and on that basis it was<br>reported that hydrocarbons had been found in the atmosphere of Venus (Sagan, 1977). The<br>situation was very confused for a number of years, but after Velikovsky\u2019s death in 1979, it<br>was eventually established, after further missions to Venus, that the planet\u2019s atmosphere<br>consisted of more than 96% carbon dioxide, with almost all of the rest being nitrogen. The<br>clouds in the atmosphere consisted of a mixture of water vapour, sulphur dioxide and<br>sulphuric acid, which together provided the absorbance capacity at 3.5 microns to link with<br>the effect of the carbon dioxide and explain the runaway greenhouse effect (Henbest, 1994;<br>Moore, 2001; Rees, 2011).<br>In The Velikovsky Heresies, Scranton drew attention to a possible way of reconciling the<br>present-day absence of hydrocarbons from the atmosphere of Venus with Velikovsky\u2019s<br>theory: large hydrocarbons may have been \u201ccracked\u201d by strong electrical discharges<br>(Scranton, 2012, p. 115). However, that would simply result in the production of smaller<br>hydrocarbons, which are also absent from the atmosphere of Venus. In any case, it was<br>turning one of Velikovsky\u2019s arguments on its head, because he proposed that particular<br>mechanism for the synthesis, not the breakdown, of large hydrocarbons, writing in Pens\u00e9e, \u201cI<br>have assumed that by electrical discharges in the atmosphere of methane and ammonia<br>(known ingredients of the Jovian atmosphere), hydrocarbons of heavy molecular weight<br>could have been created\u201d (Velikovsky, 1973\/4a).<br>It cannot be said with absolute certainty that Velikovsky\u2019s belief about the atmosphere of<br>Venus being rich in hydrocarbons 3,500 years ago has been proved wrong by discoveries<br>about the present-day Venusian atmosphere. However, one theory that seems totally<br>unsustainable, as Sagan pointed out, is his suggestion that the Earth may have been infested<br>by flies and other vermin from Venus. Velikovsky wrote, in part I chapter IX of Worlds in<br>Collision, \u201cThe question arises here whether or not the comet Venus infested the Earth with<br>vermin which may have been carried in its trailing atmosphere in the form of larvae together<br>with stones and gases. It is significant that all around the world people have associated the<br>planet Venus with flies\u201d. Even apart from the fact that such larvae would have been<br>incinerated by frictional heat as they passed through the Earth\u2019s atmosphere, it is<br>inconceivable that complex organisms adapted for life on Venus could survive in the very<br>different environment at the Earth\u2019s surface. Velikovsky\u2019s suggestion, however, cannot be<br>considered an essential aspect of his scenario. Its elimination would not result in the complete<br>negation of Velikovsky\u2019s Venus model. Nevertheless, as we have seen, this model is not in a<br>strong state at the present time. On the basis of current evidence and knowledge, it seems that<br>the most positive thing that can be said about some of Velikovsky\u2019s theories relating to<br>Venus is what Schaeffer wrote about his revised chronology: not impossible but improbable.<br>On the other hand, it should not be overlooked that conventional ideas about Venus at the<br>present time are far different from what they were when Velikovsky wrote World\u2019s in<br>Collision, and, at least in general terms, have aspects in common with Velikovsky\u2019s vision<br>(Couper and Henbest, 1985; Moore, 2001; Chown, 2011). Venus, supposedly a \u201csisterplanet\u201d of the Earth, is now known to have many anomalous features. For example, it is<br>acknowledged that the planet\u2019s surface is far hotter than previously realised, with an<br>atmosphere much more dense and hostile to life than supposed, its rotation is retrograde, and<br>its surface was molten relatively recently, on a geological time scale. That has been deduced<br>on the basis of a low and evenly-spread density of impact craters, compared to other bodies in<br>the Solar System. Estimates suggest that the surface solidified between 200 million and 800<br>million years ago, but no dating studies have yet been carried out on material from the planet<br>(McNab and Younger, 1999, pp. 87-88, 170-173, 177-180; Harfield, 2011; Rees, 2011). It is<br>now generally accepted that the high surface temperature can be explained on the basis of a<br>runaway greenhouse effect caused by the gases known to be present in the planet\u2019s<br>atmosphere, but there could be alternative causes, and suggested explanations of some of the<br>other unexpected findings involve much speculation. Work on understanding how Venus<br>arrived at its present state has hardly begun.<br>Earth<br>At the AAAS symposium, one of the problems raised by Sagan against Velikovsky\u2019s theories<br>was the lack of archaeological or geological evidence of a global catastrophe during the<br>fifteenth century BCE or, in archaeological terms, the end of the Middle Bronze Age. If the<br>event had occurred as Velikovsky described, the evidence for it should have been easy to<br>find. So, for example, in his 1942 summary, Velikovsky outlined the scenario in the<br>following words: \u201cTo begin with, our Earth collided (contacted) in the fifteenth century<br>before this era with a comet. The head of the comet exchanged violent electrical discharges<br>with our planet, and also with its own tail. The Earth changed the poles, south becoming<br>north, changed axis, changed the orbit of revolution, changed speed\u2026Iron near to the core of<br>the Earth, appeared in upper layers. Neft poured from the sky and built the present deposit.<br>Meteorites fell in abundance\u2026Lava streamed on the surface of the Earth not only from<br>volcanoes, but also from clefts. Continents and seas changed places\u2026A major part of human<br>kind perished. A double tide of immense height swept seas and continents. In general<br>conflagration woods burned down, rivers boiled\u2026Air became filled with clouds of carbons or<br>hydrocarbons, and Earth was enveloped in them during a number of years\u2026\u201d. Where, asked<br>Sagan, was the scientific evidence for such a scenario?<br>Velikovsky responded to Sagan\u2019s criticism by pointing out that he had provided abundant<br>archaeological and geological evidence of major catastrophes in Earth in Upheaval<br>(Velikovsky, 1977). Indeed, Earth in Upheaval was an impressive compilation of such<br>evidence. However, Velikovsky acknowledged in the Preface that he was not restricting<br>himself to evidence for the two catastrophes he had written about in Worlds in Collision, but<br>was also including evidence for earlier catastrophes. In many cases Velikovsky gave no<br>indication as to which catastrophe he associated with a particular piece of evidence, and in<br>some cases his linkage of evidence to the \u201cVenus catastrophe\u201d was controversial, e.g. in<br>chapter X he included in this context findings relating to the end of the last Ice Age, generally<br>believed to have been thousands of years earlier. For his archaeological evidence, he relied<br>heavily on the findings of Schaeffer, mentioned previously, but these too were controversial.<br>At the first SIS Cambridge Conference in 1993, John Bimson and Bob Porter, separately,<br>gave assessments of Schaeffer\u2019s findings in the light of subsequent developments in<br>archaeology. They agreed that there was strong evidence of widespread catastrophic<br>destructions of cities at the end of the Early Bronze Age, but the evidence for similar<br>destructions at the end of the Middle Bronze Age, the time of the Venus catastrophe, was<br>much more tenuous. Although there was evidence of earthquake damage at many of the sites,<br>there was nothing to indicate the kind of cosmic catastrophe envisaged by Velikovsky, and<br>the main reason why the destructions at the end of the Middle Bronze Age had seemed of<br>particular significance to Schaeffer was that he found evidence to suggest they had been<br>followed at each site by an occupational gap of 100 \u2013 150 years. However, to Porter, it<br>seemed likely that this apparent hiatus was simply an artefact of the dating procedure used by<br>Schaeffer (Bimson, 1993; Porter, 1993).<br>Velikovsky had supposed that a geomagnetic reversal took place at the time of the Venus<br>catastrophe, and one of the proposals he sent via Hess to the organising committee for the<br>International Geophysical Year was for this to be investigated (Velikovsky, 1972). It never<br>became part of the programme, but subsequent investigations showed that the most recent<br>geomagnetic reversal occurred during the Pleistocene epoch, long before the events at the end<br>of the Middle Bronze Age (Stanley, 1986; Hallam, 1989, p. 165; Shackleton, Berger and<br>Peltier, 1990; Cande and Kent, 1995).<br>Geomagnetic reversals were linked to inversions of the Earth in the theory of British physicist<br>Peter Warlow, who argued that the close approach of another planet could cause the Earth to<br>behave like a tippe top, and either turn over completely or wobble and return to its original<br>position, without any change of rotation in either case. The first situation could explain the<br>north-south and east-west reversal which Velikovsky claimed had happened at the time of the<br>Exodus, and the second the temporary anomaly of the Sun\u2019s movement in the sky in the days<br>of Joshua (Warlow, 1979; Warlow, 1982). One of the ten objections raised by Sagan to<br>Velikovsky\u2019s theories was the impossibility of the Earth having stopped rotating and then<br>starting again, which is what he took Velikovsky to be claiming had happened when Joshua<br>was at Beth-horon, but Warlow argued that the tippe top model provided a viable mechanism<br>to explain the biblical passage within the framework of Velikovsky\u2019s scenario. However,<br>physicist Victor Slabinski maintained that the forces which would be required to invert the<br>Earth were so great that Warlow\u2019s theory was untenable (Slabinski, 1981), and, from the<br>other side, the tippe top model was attacked in Kronos, Lynn Rose writing that it was \u201cneither<br>necessary nor sufficient for Velikovsky\u2019s scenario\u201d (Rose, 1982). Responding to Rose,<br>Warlow wrote that there was simply no alternative model which could explain Velikovsky\u2019s<br>scenario (Warlow, 1987). Two decades later, in a paper presented at the 3<br>rd<br>SIS Cambridge<br>Conference in 2007, Warlow argued that, because of an important point Slabinski failed to<br>take into account, the fact that the Earth was not a perfectly rigid body, his model remained<br>viable, and he believed that inversions, or partial inversions, of the Earth had taken place in<br>the distant past, giving rise to sudden climate changes. However, on the basis of the lack of<br>geological evidence for recent geomagnetic events, he now doubted whether any such<br>inversions had taken place within the last 10,000 years (Warlow, 2008).<br>Velikovsky had hoped to find confirmation of his Venus catastrophe theory in a discovery<br>made by Lamar Worzel, a geophysicist from the Lamont Observatory, off the coast of Central<br>and South America in the late 1950s. Sedimentation cores showed the presence of an ash,<br>subsequently known as the \u201cWorzel Ash\u201d, at various locations, and Worzel speculated that it<br>was an extensive, and possibly worldwide, deposit, of volcanic or perhaps cometary origin<br>(Worzel, 1959). In a footnote in Stargazers and Gravediggers, Velikovsky wrote, without<br>any qualification, \u201cIn 1959, J. L. Worzel discovered a layer of ash of extraterrestrial origin<br>underlying all oceans\u201d (Velikovsky, 1983, p. 194), and in an article in Pens\u00e9e, he remarked,<br>\u201cThe \u2018small dust like ashes of the furnace\u2019 which fell \u2018in all the land of Egypt\u2019 (Exodus 9:8)<br>and throughout the globe is, I surmise, still preserved at the bottom of the ocean\u201d, adding that<br>it was called Worzel Ash after its discoverer (Velikovsky, 1973\/4b). Unfortunately, further<br>investigations soon demonstrated that the Worzel Ash was volcanic in origin, and found only<br>in a few locations (Bowles, Jack and Carmichael, 1973; Ninkovich and Shackleton, 1975), a<br>point subsequently noted in catastrophist journals (Kloosterman, 1977; Ellenberger. 1984).<br>In Worlds in Collision part I chapter VI, Velikovsky wrote that, after the Exodus, \u201cFor a long<br>time there was no green thing seen; seeds would not germinate in a sunless world. It took<br>many years before the earth again brought forth vegetation\u201d. However, living bristlecone<br>pines have been found with more than 3,500 annual growth rings, showing that they lived<br>through the time of the Venus catastrophe (Ellenberger, 1984; Jastrow, 1985). It has been<br>argued that these hardy trees may have been able to \u201cshut down\u201d for a number of years, until<br>sunlight was once again able to penetrate through the atmospheric dust (Kogan, 1988). Such<br>behaviour is known to be possible for a year, but thought unlikely to be able to be sustained<br>for much longer than that. In any case, growth would have had to be resumed with full<br>vigour, because there is no indication of a period when growth rings were narrower than<br>normal. Tree rings in Irish oaks preserved in bogs, linked to ones in living oak trees by<br>finding overlapping patterns of broad and narrow rings, similarly showed no indication of a<br>major environmental crisis during the 15<br>th<br>century BCE (Baillie, 1999, pp. 23-25, 53-55).<br>As with tree rings, layers in ice-cores, e.g. from central Greenland, provide a year-by-year<br>record of climate and other environmental factors (Lamb and Sington, 1998; Macdougall,<br>2004, pp. 164-186). There is a difference in appearance between summer snow and winter<br>snow, which enables the annual ice-layers to be observed. Almost a metre of snow settles in<br>central Greenland in a year, which subsequently compresses into about 30 cm of ice over a<br>period of years, as more snow accumulates on top of it. As the process continues, the<br>increased pressure from above squeezes the ice in the layer out laterally, some of it eventually<br>ending up in the sea. Thus the thickness of each layer decreases with time, but a 10,000-yearold layer, more than 1 km down, will still be around 2 cm thick, so visible to the eye if<br>brought carefully to the surface (Alley, 2000). Analysis of ice-core layers has not revealed<br>any significant change in climate during the fifteenth century BCE, or any major anomaly<br>involving atmospheric dust or acidity content during this period (Ellenberger, 1984; Zielinski,<br>Mayewski et al, 1994; Clausen, Hammer et al, 1997). Attempts have been made to reconcile<br>this situation with the Velikovsky scenario (Rose, 1986\/1987), but counter-arguments have<br>been raised against these (Mewhinney, 1990), and whilst it cannot be said that the ice-core<br>evidence has provided conclusive proof against the theory of a global catastrophe in the<br>fifteenth century BCE, it is evident that it has not provided any positive support for the<br>notion.<br>According to Velikovsky, the close approach of Venus to the Earth stimulated extensive<br>volcanic activity. In Worlds in Collision part I chapter IV, he wrote, \u201cIn the days of the<br>Exodus\u2026all volcanoes vomited lava\u201d. Scranton, in The Velikovsky Heresies, claimed to have<br>found evidence to support this view, not only in relation to the Venus catastrophe but also the<br>Mars catastrophe. The list of large Holocene eruptions given on the web-site of the Global<br>Volcanism Program, which operates under the auspices of the Smithsonian Institution<br>(http:\/\/www.volcano.si.edu\/world\/largeeruptions.cfm), showed a record of widespread<br>significant volcanic eruptions for both of these periods. To be precise, there were 23 for the<br>period from 1820 to 1430 BCE, including the largest from the whole of the Holocene, Thera,<br>and 23 for the period from 950 to 550 BCE (Scranton, 2012, pp. 63-65, 92-93). When I<br>checked these figures on 8 July 2012, it transpired that they had changed very slightly,<br>showing 22 large eruptions from 1820 to 1420 BCE and 25 from 950 to 550 BCE, both 400-year periods. To test whether the numbers were significantly high, I then compared them with<br>those from 400-year periods immediately before 1820 BCE and immediately after 550 BCE,<br>as well as the 400-year period in the middle of the interval between 1420 and 950 BCE. The<br>outcome was that, according to this same source, and comparing like with like, there were 27<br>large eruptions between 2230 and 1830 BCE, 24 between 1380 and 980 BCE and 30 between<br>540 and 140 BCE. Thus the supposition that the numbers of large eruptions were particularly<br>high in the two periods highlighted by Scranton is without foundation.<br>Scranton went on to suggest that Velikovsky may have got the date of the Venus catastrophe<br>wrong, because he associated it (in the supplement to Earth in Upheaval) with the massive<br>eruption of Thera on the island of Santorini, and this is now dated at around 1627 BCE,<br>which also roughly corresponds with the generally agreed date for the end of the 13<br>th<br>Dynasty<br>of Egypt, similarly linked by Velikovsky to the same catastrophe (Scranton, 2012, pp. 23-24).<br>Mike Baillie, an environmental scientist from Queen\u2019s University Belfast, had previously<br>drawn attention to the correspondence between the scientific date for the Thera eruption and<br>the accepted date for the end of the 13<br>th<br>Dynasty, suggesting the possibility that this could<br>have been the time when the Exodus took place (Baillie, 1999, p. 106). That would have<br>obvious implications for Velikovsky\u2019s revised chronology. However, this scientific date for<br>the eruption of Thera, obtained from radiocarbon, tree-ring and ice-core evidence (Baillie,<br>1999, pp. 48-59, 76-77; Friedrich, Kromer et al, 2006) is just as much of a problem for<br>orthodox scholarship as it is for Velikovsky\u2019s theories, because it is difficult to reconcile with<br>archaeological evidence which indicates that pumice from Thera reached Egypt, downwind<br>from Santorini at the time of the eruption (as indicated by the direction of the ash-fall), during<br>the reign of the 18<br>th<br>Dynasty. It has been argued that radiocarbon dates from the vicinity of<br>Thera could be too old, because trees and plants growing close to a volcano may incorporate<br>carbon dioxide from volcanic emissions as well as from the atmosphere, whilst narrow tree<br>rings at around 1627 BCE in Irish oaks and an acidity spike in Greenland ice-cores at around<br>1645 BCE could have resulted from a volcanic eruption far to the north of Santorini (Porter,<br>2002; Rohl, 2007). More generally, suspicions have been raised by conventional<br>archaeologists and unorthodox scholars alike that scientific dating procedures have yet to be<br>developed to the point where the results they give can be considered truly objective and<br>reliable (Porter, 2002; Curnock, 2009; James, 2012).<br>Alternative catastrophist scenarios<br>Velikovsky\u2019s book on the catastrophes which he believed had preceded the Venus<br>catastrophe, involving Jupiter, Saturn, and also Mercury and Uranus, was never published<br>(except, after his death, on the Velikovsky Archive web-site: http:\/\/www.varchive.org\/itb\/).<br>However, in 1979, an article based on the chapter dealing with Saturn and the Flood appeared<br>in Kronos (Velikovsky, 1979). Velikovsky\u2019s reading of myths from around the world<br>convinced him that, before the time of the catastrophes linked to Jupiter, when the Old<br>Kingdom of Egypt came to an end and the cities of Sodom and Gomorrah were destroyed,<br>there had been a Golden Age on Earth, when gods associated with the planet Saturn were preeminent. Velikovsky formed the view that Saturn had then been much larger than it is today,<br>and the Earth may have been its satellite. However, an encounter between Jupiter and Saturn<br>caused the latter to become a nova (i.e. to emit light) for a period of time, losing much of its<br>mass, and also its hold on the Earth, under conditions which gave rise to the story of the<br>Deluge.<br>In 1981, in Chaos and Creation, and the subsequent volumes which comprised the<br>quantavolution series, de Grazia, in cooperation with the Canadian physicist, Earl Milton,<br>extended Velikovsky\u2019s ideas backwards in time and developed the notion of Solaria Binaria.<br>According to this model, before the time in which Saturn (or rather Super-Saturn) had been<br>the celestial body which dominated the Earth, there had been a binary system involving the<br>Sun and Super-Uranus, held together largely by electromagnetic forces. At that time the Earth<br>had been close to Super-Uranus, so it was that body which dominated the sky. Solaria Binaria<br>began to disintegrate around 14,000 years ago, with Super-Uranus losing a significant part of<br>it mass and becoming Super-Saturn. Then, before Super-Saturn, as in the Velikovsky<br>scenario, also lost part of its mass and became a nova, a fragment of Super-Uranus passed<br>close to the Earth and tore away part of the crust, resulting in the formation of the Moon. The<br>present continents were formed by continental drift from the splitting of the super-continent<br>Pangaea, as in the conventional theory, but at a much faster rate (de Grazia, 1981, pp. 103-118, 165-181).<br>Independently of this, David Talbott, Dwardu Cardona and Ev Cochrane, in books (Talbott,<br>1980; Cochrane, 1997, 2000) and various journals, particularly Aeon, founded in 1988<br>(Talbott, 1988; Cardona, 1988, 1991; Cochrane, 1988), also developed Velikovsky\u2019s ideas<br>about significant changes taking place within the Solar System in early historical times, to<br>formulate the \u201cSaturn theory\u201d . Their studies of myths led them to conclusions which differed<br>in some important respects from Velikovsky\u2019s. According to Talbott, \u201cIt is now clear that<br>Velikovsky was not correct on many details, but his best critics are those who have devoted<br>their lives to investigating questions and possibilities arising from his work. They know that<br>he was closer to the truth than his scientific critics\u201d (Talbott, 2008).<br>It seemed to Talbott, Cardona and Cochrane that, at the dawn of civilisation, most of the<br>planets, including Venus, had been constrained in a cluster in the direction of the polar<br>region, with Saturn being the most prominent of them. Despite some disagreements of detail<br>between Talbott and Cardona, this led to the \u201cpolar configuration\u201d hypothesis, which<br>maintains that Jupiter, Saturn, Venus, Mars and Earth once orbited the Sun as a single linear<br>unit, rotating about a point close to Saturn. Jupiter did not appear prominent from Earth,<br>being largely hidden behind Saturn, whereas Venus and Mars lay between Saturn and the<br>Earth. This stable arrangement lasted throughout a period which was seen in retrospect as the<br>Golden Age on Earth, since the breakdown of the polar configuration resulted in battles<br>between the planetary gods, with thunderbolts and missiles being slung around, causing<br>havoc on Earth, before the Solar System settled into its present, relatively quiescent, form.<br>The first major discussion of the Saturn theory in Britain took place at the SIS Silver Jubilee<br>conference in 1999. At this conference, Cardona said that the theory raised demands relating<br>to mythological and physical evidence for the formation and destruction of the polar<br>configuration, and argued that these demands could be met (Cardona, 2000). Cochrane also<br>outlined evidence supporting the theory, but acknowledged, \u201cThe most obvious objection to<br>the Saturn theory is its apparent incompatibility with conventional astrophysics. This is<br>indeed a formidable objection, one deserving of serious attention and, ultimately, a valid<br>answer, ideally in terms of offering a viable physical model for the polar configuration\u201d<br>(Cochrane, 2000). An early attempt at such a model (Grubaugh, 1993) was found by<br>Slabinski to be untenable (Slabinski, 1994). In the year 2000, Italian mathematicians Emilio<br>Spedicato and Antonino Del Popolo developed a model which showed that the polar<br>configuration could hold together, but only for a very short period of time (Spedicato and Del<br>Popolo, 2000). This model did not take into account tidal effects or electromagnetic forces,<br>which offered some hope to the supporters of the Saturn theory, but the formulation of a<br>viable physical model is still awaited.<br>Speaking after Cochrane at the SIS Silver Jubilee conference, historian Peter James said that<br>the most obvious problem with the Saturn Theory was not the lack of a viable physical<br>model, nor the shortage of specific details which had so far been supplied, but how to explain<br>how the Earth &#8211; and its inhabitants &#8211; could possibly have survived the upheaval of being<br>wrenched from its position which was always close to Saturn and hurled into an independent<br>orbit around the Sun. James suggested that the apparent description of Saturn in ancient<br>writings as a brilliant object could be explained if a large body had crashed into Saturn at<br>around this time and turned the planet into an incandescent ball of vapour, out of which<br>Saturn\u2019s rings were eventually formed (James, 2000).<br>Another challenge to the Saturn theory and, indeed, planetary catastrophism in general, has<br>been posed by patterns of temperature fluctuations, as indicated by oxygen isotope ratios, in<br>both ice-cores and deep-sea sedimentation-cores, and also by sea-level data from coral<br>terraces, which are generally consistent with predicted Milankovitch cycles (Shackleton and<br>Opdyke, 1973; Kerr, 1978; Pillans, Chapell and Naish, 1998). These cycles were derived by<br>the mathematician Milutin Milankovitch on the basis of characteristics of the Earth\u2019s current<br>orbit (Lamb and Sington, 1998; Macdougall, 2004, pp. 115-140, 164-186). They do not<br>provide a complete explanation for temperature change, because there were occasions when<br>the records show a dramatic disruption to the effects of the Milankovitch cycles, but the<br>existence of underlying patterns of temperature fluctuation as predicted by Milankovitch<br>suggests that the Earth has been in its present orbit for a very long time. This was referred to<br>recently by physicist Bob Bass, who has been a long-time advocate of the view that<br>Velikovsky\u2019s scenario could not be said to be impossible \u2013 he made that point, for example,<br>at SIS conferences in 1978 and 2007, almost thirty years apart (Bass, 1982; Bass, 2008).<br>However, in an email circulated in November 2009, he attached a comparison of predicted<br>temperature fluctuations over the past 200,000 years and temperature fluctuations inferred<br>from oxygen-isotope ratios in ice-core layers for the same period, and asked: \u201cSee the<br>attached a priori prediction versus the measurement and tell me if you aren\u2019t convinced of<br>the Milankovitch theory of Solar Insolation as dominating earth\u2019s temperature variations? But<br>doesn\u2019t that preclude disruptive global catastrophism for the past 200,000 years?\u201d Taken in<br>isolation, the agreement between the temperature fluctuations inferred from ice-cores and the<br>theoretical predictions might be brushed aside, but the fact that there is similar agreement<br>when the temperature fluctuations are inferred from deep-sea sedimentation cores and coral<br>terraces makes it much more difficult to do so. There is an issue which needs to be properly<br>addressed.<br>Moving on, Talbott teamed up with Thornhill in 1997 to begin arguing that several of the<br>regular motifs found in inscriptions of a mythological nature and also in rock art are<br>depictions of plasma-discharge streamers between planets (Talbott and Thornhill, 2005;<br>Talbott, 2008). Tony Peratt, a recognized authority on plasma-discharge formations and<br>instabilities, acknowledged in 2000 that the same patterns are regularly found in laboratory<br>experiments (Peratt, 2003; Peratt, McGovern et al, 2007). Rens van der Sluijs has made a<br>particular study of the Axis Mundi, now regarded as the imaginary extension of the axis of<br>rotation of the Earth, but which, on the basis of mythology and rock art, seems to have been<br>clearly visible around the end of the Neolithic period. In the polar configuration scenario,<br>that could have been due to electrical discharges along the axis between the Earth and the<br>other planets, but other explanations are possible. Peratt has shown that an aurora would take<br>the form of an enormous column if the solar wind was one or two orders of magnitude greater<br>than it is at the present time, so the ancients may have witnessed a long-lasting high-energy<br>auroral storm (Sluijs, 2008).<br>As well as claiming evidence of plasma-discharge streamers, Thornhill and Talbott have also<br>addressed more general issues about electricity in the Universe, developing a model proposed<br>by Juergens in Pens\u00e9e (Thornhill and Talbott, 2007). Juergens adopted a controversial idea<br>proposed during the 1950s by Melvyn Cook, a chemist at the University of Utah, that the Sun<br>had an external source of energy, not an internal one driven by thermonuclear reactions, as<br>generally believed. Juergens also maintained that Mariner 2 had demonstrated in 1962 that<br>interplanetary space was not a near-vacuum, as previously supposed, but full of plasma,<br>making it an electrified medium. In his model, the Sun, although already negatively charged,<br>acted as an anode to collect more negative charges, because of its interstellar environment,<br>and in this way provided the mechanism to drive solar radiation (Juergens, 1972).<br>During the past twenty years, there have been tremendous advances in our knowledge of the<br>Universe, the Hubble space telescope and other sensitive instruments revealing features that<br>were totally unexpected, including immense clouds and streamers of hot ionised gas.<br>Conventional scientists attempt to explain the emerging picture in terms of concepts such as<br>black holes, dark matter and dark energy, but accept that there are currently many aspects of<br>the Universe that are poorly understood (Henbest and Couper, 2001, pp. 140-189; Baldwin<br>and Cooper, 2009; Achenbach, 2012; Frank, 2012). Similar considerations also apply to<br>investigations of sub-atomic structure (Hawking, 1988, pp. 63-79; Matthews, 1992, pp. 153-197; Baggott, 2012). Amongst the heretics, much work has been carried out by Thornhill,<br>Talbott and others in developing the Electric Universe concept from the theory of Juergens,<br>as well as previously-neglected ideas of physicists such as Hannes Alfv\u00e8n and Halton Arp<br>(Scott, 2006; Thornhill and Talbott, 2007). However, Thornhill acknowledged at a meeting in<br>London in 2009 that there was not, as yet, a complete, coherent \u201cbig picture\u201d of the Electric<br>Universe theory (Chronology and Catastrophism Review 2010, pp. 75-76).<br>Thornhill has said he is convinced, from the mythological evidence, that planets have<br>changed orbits, but he considers that the rapid recovery of stability defies our present<br>understanding of gravity-dominated mechanics, and he also believes that Velikovsky\u2019s<br>analogy between the planets in the Solar System and the electrons in an atom was unhelpful.<br>According to Thornhill, the electrical theory of magnetism and gravity proposed by Ralph<br>Sansbury, an independent New York physicist, could be of great importance, but so far other<br>scientists have remained unconvinced by this theory, and also by Sansbury\u2019s claims that it<br>has been possible to modify gravity in laboratory experiments (Thornhill, 1998; Thornhill,<br>2008).<br>A model of cosmic catastrophism which followed Velikovsky\u2019s approach of taking ancient<br>myths as indications of real events, but which was entirely consistent with conventional<br>views of celestial mechanics, and with observational evidence, was proposed in 1982 by<br>British astronomers Victor Clube and Bill Napier in their book The Cosmic Serpent and<br>developed eight years later in The Cosmic Winter (Clube and Napier, 1982; 1990). Shortly<br>before the publication of the first of these books, Clube outlined the theory at a meeting of the<br>SIS in London (Clube, 1984). Estimates of the range of diameters of cometary nuclei in the<br>regions beyond Jupiter suggested that, although most would be between 1 and 10 km, there<br>were likely to be a significant number as large as 200 km. Although small by planetary<br>standards, a giant comet of this size could pose a very serious threat to Earth if propelled into<br>the Inner Solar System. Even if there was no direct collision with the Earth, the giant nucleus<br>could well disintegrate under the gravitational influence of the Sun, releasing large amounts<br>of dust and boulders, to cause significant problems for life on Earth. Such a scenario,<br>involving devastation on Earth because of a cluster of impacts over a short period of time,<br>couple with global cooling caused by the dusting of the upper atmosphere, has been termed<br>coherent catastrophism (Steel, 1995).<br>Clube and Napier have argued that the present orbits of Comet Encke, the Taurid meteor<br>stream and several asteroids, e.g. Oljato, indicate that they were all part of the same body,<br>probably the nucleus of a giant comet, a little over 20,000 years ago. This giant comet, protoEncke, came into the Inner Solar System and began to disintegrate during the Pleistocene<br>epoch. They linked the glacial conditions of the Late Pleistocene to the dusting of the Earth\u2019s<br>atmosphere by some of the breakdown products. This situation eased around 10,000 years<br>ago, allowing temperatures to rise, but remnants of the giant comet continued to threaten the<br>Earth. Clube and Napier have suggested that the Earth encountered a swarm of meteors and<br>cometary debris between around 2,500 and 2,100 BCE, when there appeared to have been a<br>general deterioration in climate, and again at the time of the Exodus, which they dated to<br>1369 BCE. At times during the Early and Middle Bronze Ages, Comet Encke would have<br>appeared as a brilliant object in the morning and evening sky, so myths and legends arising<br>from catastrophes during this period may subsequently have been transferred to deities<br>associated with the planet Venus, which would have been the brightest object in the morning<br>and evening skies after Comet Encke dimmed following further disintegration (Clube and<br>Napier, 1990, pp. 181-204). As for events before that time, van der Sluijs has suggested that<br>the disintegration of proto-Encke could provide a possible cause of the huge auroral storm of<br>the Late Neolithic (http:\/\/www.mythopedia.info\/aurora.html; see also McCafferty and Baillie,<br>2005). However, questions have been raised about how well the Clube-Napier theory can<br>explain details of ancient literature and ancient art (Cochrane, 1998).<br>The existence of the Taurid-Encke complex is well-established, but its origins remain<br>uncertain, and there is as yet no clear evidence to link it to catastrophic episodes on Earth.<br>The Clube-Napier theory has received support from some British astronomers, but not to any<br>significant extent from American ones.<br>Conclusions<br>Now let us move towards some conclusions and statements of personal belief. First let me say<br>that I fully agree with de Grazia with regard to the stance he took concerning interdisciplinary<br>research in his paper on \u201cThe Scientific Reception System\u201d, which formed part of the special<br>issue of the American Behavioral Scientist and also the book, The Velikovsky Affair. There<br>may have been perfectly good reasons for scientists to concentrate on their chosen specialist<br>area, after the time when, during the early 19<br>th<br>century, the amount of information available<br>became too great for many to be able to claim with any justification that they were experts in<br>more than one area. The peer-review scientific reception system introduced into each<br>specialist area still works perfectly well in the majority of cases. However, as de Grazia<br>pointed out, it cannot cope with interdisciplinary research, which is where the majority of key<br>breakthroughs are likely to take place, because they are the product of truly original thinking<br>(de Grazia, 1978). Classicist Bill Mullen, who has been a tutor in interdisciplinary studies,<br>came to similar conclusions in an article in Pens\u00e9e (Mullen, 1972).<br>Specialists can perhaps be forgiven for being suspicious of an opinionated outsider who<br>comes along and tells them that their carefully assembled models are worthless. In most<br>cases, such outsiders will just be revealing their profound ignorance. However, sometimes an<br>outsider will be able to see genuine flaws in an established model, and perhaps provide a<br>better one, by looking at the situation from a different perspective. For this reason,<br>particularly for the investigation of topics which lie at the interface between traditional<br>subject boundaries, interdisciplinary teams are now occasionally set up, allowing crossfertilisation to take place in discussions between specialists from different disciplines.<br>However, where are the results of interdisciplinary research projects to be published, since<br>most journals cater for a narrow specialism, and how is the work to be judged?<br>In the UK, research in each subject in each university is graded by peer-review every five<br>years or so, as part of the government\u2019s \u201cResearch Assessment Exercise\u201d. Initially (although<br>subsequently less so), substantial government funding was made available for groups who<br>were given high grades. Statements were made about the importance of interdisciplinary<br>research, and appeals were made for interdisciplinary projects to be submitted for assessment.<br>However, these were then judged by passing them between different specialist panels, and<br>there is a widespread perception that they generally finished up with unfairly-low grades<br>(Loder, 1999; Elton, 2000; Gilbert and Lipsett, 2007). So, in the UK, and no doubt elsewhere,<br>despite the payment of lip-service to the importance of interdisciplinary research, nothing has<br>yet been done to allow it to be properly funded or for the outcomes to be properly propagated<br>and judged. That situation needs to change.<br>I also agree de Grazia and, indeed, Velikovsky, in believing that catastrophes of<br>extraterrestrial origin have had, or at least are very likely to have had (since nothing can be<br>proved with certainty), a significant effect on the Earth and its inhabitants in the geologicallyrecent past. When Velikovsky wrote Worlds in Collision, it was almost universally believed<br>that no such catastrophes could have taken place, whether of extraterrestrial origin or<br>otherwise. Today the situation is very different, at least in some respects. It is now accepted,<br>in principle, that mechanisms exist which could give rise to such catastrophes. So, for<br>example, it has been established that the threat from asteroids and comets is far greater than<br>had been supposed, because they explode with great power on impact with the Earth, and<br>also, it is now accepted that similar levels of destruction could arise from explosive eruptions<br>of volcanoes, a fact not previously realised. Nevertheless, when it comes to investigating any<br>particular episode of apparently rapid change, there is a clear reluctance to take seriously the<br>possibility that it might have been caused by a natural catastrophe. Some beliefs from the past<br>have become so firmly embedded into the culture of scholars that they persist long after any<br>justification for them has disappeared. One of these is the supposition that uniformitarianism<br>is in some way more scientific than catastrophism, established by Charles Lyell in the 19<br>th<br>century. Lyell had been trained as a lawyer before becoming a geologist, and he used all his<br>lawyer\u2019s tricks to get across the beguiling message that although the geological record<br>seemed to reveal some times of sudden change, anyone who was clever enough to look<br>beyond the obvious would find reasons to conclude that all change was gradual. He also<br>established the false belief that the catastrophists of his time were not objective scientists, but<br>men driven by religious dogmatism (Gould, 1988; Huggett, 1997, pp. 85-87; Palmer, 2003,<br>pp. 45-51).<br>The belief amongst scholars that there was no threat to the Earth from the skies had been<br>established for even longer than uniformitarianism, by a wide margin. Aristotle, as part of his<br>theory that the universe consisted of a series of concentric spheres, with the Earth at the<br>centre, taught that nothing could pass from the perfect heavens to the corrupt Earth, and,<br>despite the superstitions of common folk, that doctrine was accepted by scholars throughout<br>the medieval period. Then, when Newton introduced his model of a mechanical universe,<br>operating according to natural and unchanging laws, he maintained that God, who had set it<br>up in the first place, was a benign deity, so would have taken care to avoid the possibility that<br>a comet could crash into the Earth and cause catastrophes. On the authority of Newton,<br>therefore, the notion that the Earth was safe from the threat of a cosmic catastrophe remained<br>a core belief among scientists (James and Thorpe, 1999, pp. 2-5; Palmer, 2003, pp. 8-13;<br>Cohen and Whitman, 1999).<br>Thus, although the origins of the belief might not have been realised, scientists in the first<br>half of the 20<br>th<br>century and beyond had a mindset which made it difficult for them to<br>contemplate the possibility that a major catastrophe, particularly one of extraterrestrial origin,<br>had affected the course of life on Earth at some point in the past.<br>Even when it became established that mass extinction episodes were real events, not just<br>artefacts of the fossil record, or peaks in the natural fluctuation of turnover rates of species, it<br>was generally supposed that they must have occurred over a substantial period of time, as a<br>result of slow climate change, perhaps linked to continental drift (Hallam, 1989, pp. 184-193;<br>Briggs, 1994; Gould, 2002, pp. 1296-1320). Challenging this view in 1980, Luis and Walter<br>Alvarez, father and son, but also constituting an interdisciplinary team of a Nobel-prizewinning physicist and a geologist, both from Berkeley, argued that the extinction of the<br>dinosaurs and many other species at the end of the Cretaceous period had been caused by the<br>impact of an asteroid 10 km in diameter, and they produced evidence in the form of raised<br>levels of iridium (an element associated with extraterrestrial materials and normally found in<br>only trace amounts in the Earth\u2019s crust), at the Cretaceous-Tertiary boundary at sites<br>throughout the world (Alvarez, Alvarez et al, 1980; Alvarez, 1997). However, most<br>geologists continued to suggest that it was somehow more scholarly to think that the iridium<br>had been released from the Earth\u2019s core by volcanic activity associated with continental drift,<br>than to suppose that the terminal Cretaceous extinctions could have been caused by a<br>catastrophe of cosmic origin. So, for example, Beverly Halstead of Reading University wrote<br>in 1981: \u201cThe asteroid or giant meteor explanation has the great popular appeal of high<br>drama\u2026Such theories are certainly an advance on invoking the wrath of a Deity but not very<br>much\u2026The other type of theory involves a careful consideration of all the evidence that can<br>be accumulated, drawing both from biology and geology. These more synthetic theories tend<br>to be less exciting but are more likely to approximate to what actually happened\u201d (Halstead,<br>1981). Others used less emotive language, but the message was still the same. During the<br>1990s, it became established that a 10 km cosmic object had struck the Earth near Chicxulub<br>in the Yucat\u00e1n at the very end of the Cretaceous period, producing an enormous crater 180<br>km in diameter (Hildebrand, Penfield et al, 1992; Swisher, Grajales-Nishimura et al, 1992;<br>Sharpton, Dalrymple et al, 1992; Alvarez, 1997). This would have required an explosive<br>force equivalent to around 100 million megatons of TNT, 6 billion times that of the<br>Hiroshima atomic bomb, and 4-40 million times greater than that which produced the<br>Barringer crater in Arizona. Even so, many still maintain that the dinosaurs were on the way<br>to extinction anyway, so this impact just made a contribution to the process, and not<br>necessarily a major one (Hallam and Wignall, 1997; Courtillot, 1999; Palmer, 2003, pp. 197-205, 228-243; Hallam, 2004).<br>Nevertheless, it is now firmly established that the death of the dinosaurs led to the emergence<br>of the mammals, not the other way round, as had been supposed on the basis of traditional<br>Darwinian evolution (Haines, 2001; Gould, 2002, pp. 1296-1343, Palmer and Barrett, 2009).<br>It now seems, just as Velikovsky argued in chapter XV of Earth in Upheaval, that natural<br>selection generally constrains major evolutionary developments. Velikovsky suggested that<br>the key points in evolution were linked to catastrophes, these wiping out many existing<br>species, whilst radioactivity associated with the catastrophes caused multiple mutations,<br>giving rise to their successors. Radioactivity certainly causes mutations, but generally in a<br>destructive way. In any case, it eventually became apparent that, at the end of the Cretaceous<br>period and also at other mass-extinction horizons, there is a substantial gap in the fossil<br>record between the disappearance of one group of species and the emergence of their<br>successors (Eldredge, 1989; Benton, 1991; Janis, 1993). That is now taken to indicate that,<br>when there is plenty of ecological space following a mass-extinction episode, natural<br>selection can operate in a much more positive fashion than at other times, giving rise to a<br>wide range of novel forms in a relatively rapid, but far from instantaneous, fashion (Raup,<br>1991; Eldredge, 1992; Palmer, 2003, pp. 244-251). There have also been some recent<br>indications that a major catastrophic event, as well as creating ecological space, could also<br>contribute to the overall process by giving natural selection more variant forms to work on,<br>since it has been shown that severe stress can increase the rate at which random mutations<br>occur, and can also give rise to inheritable epigenetic changes (Palmer, 2010). However,<br>many orthodox geologists and evolutionary biologists are still reluctant to think that<br>catastrophes of extraterrestrial origin could have been the cause of mass extinction episodes.<br>This attitude has been demonstrated over the past few years in relation to investigations of the<br>theory put forward by Berkeley physicist, Rick Firestone, and some colleagues (Firestone,<br>West and Warwick-Smith, 2006), following on from a suggestion made previously by the<br>Dutch geologist, Han Kloosterman (Kloosterman, 1976; Kloosterman, 1999). It was proposed<br>that a cometary catastrophe at the end of the relatively-warm B\u00f8lling-Aller\u00f8d interstadial<br>around 12,900 years ago was the cause of extinction of the Columbian mammoth and other<br>American large animals, as well as a return to extremely cold conditions in the Younger<br>Dryas, the final stage of the Pleistocene epoch (Firestone, West et al, 2007; Bunch, Hermes et<br>al, 2012; Lecompte, Goodyear et al, 2012). Much geological evidence of a significant<br>extraterrestrial impact at this time has been produced, but it has generally been dismissed by<br>others (Surovell, Holliday et al, 2009; Kerr, 2010; Pinter, Scott et al, 2011; Pigati, Latorre et<br>al, 2012). Sometimes even the finders of such evidence have sought an alternative<br>explanation. For example, Annelies van Hoesel and other geologists from Utrecht recently<br>found nanodiamonds, a known product of impacts, at the Usselo horizon in Holland,<br>generally believed to correspond to the boundary marking the beginning of the Younger<br>Dryas in other parts of the world. This boundary is often characterised by a carbon layer, the<br>product of wildfires, which frequently follow an impact. However, the Dutch team concluded<br>that the nanodiamonds had probably been formed by the wildfires (Hoesel, Hoek et al, 2012),<br>even though there is no known mechanism by which this could happen. They also stated that<br>their radiocarbon-dating studies showed that the wildfires had occurred 200 years after the<br>start of the Younger Dryas, without acknowledging that this apparent 200-year difference<br>could be largely explained away by the fact that they had used a different calibration curve<br>from the teams who had dated the beginning of the Younger Dryas (Howard, 2012).<br>Napier has produced evidence to suggest that the event 12,900 years ago, which produced the<br>harsh conditions of the Younger Dryas, was caused by debris from the disintegrating giant<br>comet, proto-Encke, in line with the Clube-Napier scenario (Napier, 2010). After that,<br>according to the same scenario, the return to warmer conditions at the end of the Younger<br>Dryas, around 11,500 years ago, came when dust from an encounter with this disintegrating<br>comet began to clear from the Earth\u2019s atmosphere. According to Greenland ice-core data,<br>average temperatures rose at this time by almost 10\u00ba C in a short period of time, probably less<br>than a decade (Severinghaus and Brook, 1999; Mithen, 2003, pp. 12-13; Fagan, 2004). This<br>might indicate a more specific event at the end of the Younger Dryas than that suggested by<br>Clube and Napier, and possibly one unrelated to the mechanism which produced the cold<br>conditions during that period. In 1990, Emilio Spedicato attributed the warming to the effects<br>of asteroid impact in an ocean (Spedicato, 1990). Seven years later, Flavio Barbiero<br>suggested that a rapid pole-shift had taken place at this time, caused by an asteroid impact<br>(Barbiero, 1997). More recently, geologist Robert Schoch has argued that only something<br>akin to a major plasma event, resulting from emissions from the Sun or some other cosmic<br>body, could explain the rapid rise in temperature which occurred at the end of the Younger<br>Dryas (Schoch, 2012; http:\/\/www.robertschoch.com\/plasma.html). The dangers from such<br>events are becoming increasingly apparent (Henbest and Couper, 2001, pp. 140-152; Clark,<br>2009), but not uniquely so. At this present conference in Naxos, in an earlier presentation,<br>Spedicato suggested another possible scenario, involving an encounter with a large cosmic<br>body.<br>Velikovsky, in the final section of part II chapter VII of Worlds in Collision, argued that the<br>last glaciation in North America and Europe (i.e. the Younger Dryas) persisted until the time<br>of either the Venus or the Mars catastrophe, when an axial shift resulted in a movement of the<br>polar circle from northeastern America to northeastern Siberia, exterminating the mammoths.<br>That scenario is not supported by Greenland ice-core evidence, which indicates that<br>temperatures began to rise sharply around 11,500 years ago, and have remained at<br>significantly higher levels ever since (Mithen, 2003, pp. 12-13; Fagan, 2004). It is now<br>generally accepted that the melting of the polar ice-sheets as a consequence of this climate<br>change 11,500 years ago caused sea-levels throughout the world to rise by around 100 metres<br>(Officer and Page, 1993; Ryan and Pitman, 1998; Gornitz, 2007). Although this took place<br>rapidly by geological standards, and in spurts rather than at an even pace, inhabitants of lowlying coastal regions would generally have had no problem in moving back to higher ground<br>before their villages were swallowed up by the rising seas. However, on occasions, the<br>sudden collapse of natural barriers which had been holding back the advancing waters must<br>have led to catastrophic flooding, possibly giving rise to legends of a Universal Deluge<br>(Officer and Page, 1993; Mithen, 2003, pp. 150-157; Palmer, 2009).<br>Velikovsky\u2019s proposed mechanism for the Universal Deluge \u2013 Noah\u2019s Flood \u2013 was the<br>transfer of water from the atmosphere of Saturn. He suggested it was quite possible that the<br>Earth\u2019s water content had more than doubled by this mechanism at some time between five<br>and ten thousand years ago, probably closer to the latter than the former (Velikovsky, 1973).<br>Whatever the mechanism, there was undoubtedly wide-scale flooding, sometimes of a<br>catastrophic nature, during this period.<br>Moving forward a few thousand years, Lonnie Thompson, a geophysicist and climatologist at<br>Ohio State University, has assembled evidence from around the world of an abrupt climate<br>change at approximately 3200 BCE, which was co-incident with structural changes in several<br>emerging civilisations (Thompson, Mosley-Thompson et al, 2006; Thompson, 2010). Plants<br>were covered by the Quelccaya ice cap in the Peruvian Andes at this time, and the Sahara<br>switched from a habitable region to a barren desert. Also, tree rings from Ireland and England<br>were unusually narrow, and there was an acidity peak in Greenland ice-cores (Baillie, 1999,<br>pp. 51, 54). Thompson attributed the various indications of climate change and its<br>consequences at around 3200 BCE to a dramatic fluctuation in solar energy reaching the<br>Earth (http:\/\/www.researchnews.osu.edu\/archive\/5200event.htm). The University of Vienna<br>geologist, Alexander Tollmann, together with his wife, Edith, had previously proposed that<br>there had been an impact event at around 3150 BCE, following a larger one at around 7640<br>BCE (which they linked to the legend of Noah\u2019s Flood) (Tollmann and Kristan-Tollmann,<br>1994). More recently, British engineers Alan Bond and Mark Hempsell have argued, on the<br>basis of their claimed decipherment of an Assyrian inscription, that Sumerian astronomers in<br>3123 BCE recorded the passage of a fireball across the sky in a low, flat trajectory, heading<br>in the direction of Austria. Bond and Hempsell went on to deduce that the fireball, an Aten<br>asteroid, exploded in the vicinity of K\u00f6fels, causing an enormous landslide, of which<br>evidence still exists (Bond and Hempsell, 2008). That is controversial, but there are clear<br>indications of climate change at around this time, although the rate of change is a matter of<br>argument.<br>Clear indications of climate change, coincident with the collapse of civilisations, are also<br>found at the end of the Early Bronze Age, dated to around 2300 BCE by conventional<br>scholars, and also by Velikovsky in chapter XII of Earth in Upheaval. This was the period of<br>Velikovsky\u2019s proposed catastrophic episode associated with \u201cJupiter of the Thunderbolt\u201d,<br>when the Old Kingdom of Egypt fell, the impressive Troy II civilisation ended, and the cities<br>of the Jordan plain, including Sodom and Gomorrah, were destroyed by fire from above.<br>Irish oaks show an episode of reduced growth centred on 2345 BCE (Baillie, 1999, p. 54),<br>and the American engineer, Moe Mandelkehr, compiled a wealth of evidence of catastrophic<br>events and rapid climate change at this time, this being presented in a series of papers in the<br>publications of the SIS from 1983 to 2007, and towards the end of that period as a book in<br>three volumes (Mandelkehr, 2006). Similar evidence was also presented by others at the 2<br>nd<br>SIS Cambridge Conference in 1997 (Peiser, Palmer and Bailey, 1998, pp. 93-139).<br>Investigations by Fekri Hassan of University College London have demonstrated that the Old<br>Kingdom of Egypt came to an end at a time of droughts and famine (Hassan, 2007).<br>Similarly, a detailed examination at Tell Leilan in northern Syria by a team led by Yale<br>archaeologist Harvey Weiss, showed that the climate in the region of this previously thriving<br>site had suddenly become arid at the end of the Early Bronze Age, resulting in its<br>abandonment for a period of several centuries (Weiss, Courty et al, 1993; Kerr, 1998;<br>Marshall, 2012). This seemed to be typical of what happened throughout the Middle East,<br>and a layer of tephra particles at the level of climate change at several sites implicated a<br>volcanic eruption as the cause. On the other hand, Peter James and Nick Thorpe considered it<br>more likely that the prime cause had been an extraterrestrial impact (James and Thorpe, 1999,<br>pp. 50-58). Mandelkehr suggested that, at this time, there had been an encounter with the<br>Taurid complex (Mandelkehr, 2001, 2006), as in the Clube-Napier model. French geologist<br>Marie-Agn\u00e8s Courty, who had worked with Weiss, found that a dust layer at Tell Leilan and<br>other sites in the Middle East showed evidence of having been formed as a result of an<br>impact into igneous rock (Peiser, Palmer and Bailey, 1998, pp. 93-108). However, no<br>appropriate impact crater has yet been discovered.<br>In the middle of the next millennium came the end of the Middle Bronze Age, the time of<br>Velikovsky\u2019s Venus catastrophe, which has already been discussed, and after that came the<br>end of the Mycenaean period in Greece, which Velikovsky associated with the time of his<br>Mars catastrophe. Orthodox scholars date the end of the Mycenaean culture, and of the Late<br>Bronze Age, to around 1200 BCE, whereas Velikovsky placed the end of the Mycenaean<br>period in the 8<br>th<br>century BCE. On the basis of current archaeological and geological<br>evidence, it would appear that the end of the Middle Bronze Age and the end of the<br>Mycenaean age were not cataclysmic periods on the scale envisaged by Velikovsky, but<br>natural catastrophes and cultural upheavals nevertheless occurred on both occasions. A<br>catastrophist scenario to explain the events on the former occasion, involving asteroid<br>impacts, has been proposed at this present conference by Spedicato. The latter occasion was<br>characterised by a change to cooler and drier climates in the Mediterranean region,<br>accompanied by large earthquake storms (Peiser, Palmer and Bailey, 1998, pp. 140-147; Nur,<br>2008; Marshall, 2012).<br>There are thus a number of occasions from the start of the Younger Dryas to the end of the<br>Mycenaean period when quantavolutions, i.e. significant changes to life on Earth linked to<br>environmental upheavals, have taken place. Because of the continuing influence of the<br>uniformitarian paradigm, there is still widespread resistance to the notion that the changes<br>could have been rapid, or caused by natural catastrophes. However, if they really were<br>sudden catastrophic events, as seems to me to be likely, then accumulating evidence must<br>eventually bring about a paradigm change, although this will not happen easily or quickly.<br>Establishing the prime cause or causes of the catastrophes is likely to be particularly difficult,<br>because different catastrophists will no doubt be supporting different theories, all of them<br>beautiful to their adherents, and indeed to many others, but they cannot all turn out to be<br>correct. It is even possible that the prime cause of one or more of the catastrophic episodes<br>may prove to be something that no-one has yet thought of, particularly since recent<br>discoveries about the Solar System, the Universe and, at the other end of the scale, the nature<br>of matter itself, have brought home the realisation of just how little we know, rather than how<br>much. At the beginning of the 20<br>th<br>century, reflecting the general belief of the time, the<br>American physicist, Albert Michelson, wrote, \u201cThe more important fundamental laws and<br>facts of physical science have all been discovered, and these are now so firmly established<br>that the possibility of their ever being supplanted in consequence of new discoveries is<br>exceedingly remote\u201d (Michelson, 1903). A century later, it can be seen that such confidence<br>was misplaced, for significant advances are still occurring (Hawking, 1988, pp. 171-175; R.<br>Matthews, 1992, pp. 219-259; Baldwin and Cooper, 2009; Achenbach, 2012; Frank, 2012).<br>As to the best way for young researchers to proceed in this context, I can do no better than<br>quote the final paragraphs of Velikovsky\u2019s address to the Graduate College Forum of<br>Princeton University in 1953:<br>\u201cWhat I want to impress upon you is that science today, as in the days of Newton, lies before<br>us as a great uncharted ocean, and we have not yet sailed very far from the coast of<br>ignorance. In the study of the human soul we have learned only a few mechanisms of<br>behaviour as directed from the subconscious mind, but we do not know what thinking is or<br>what memory is. And in biology we do not know what life is. The age of basic discoveries is<br>not yet at an end, and you are not latecomers, for whom no fundamentals are left to discover.<br>As I see so many of you today, I visualize some of you, ten or twenty or thirty from now, as<br>fortunate discoverers, those of you who possess inquisitive and challenging minds, the will to<br>persist, and an urge to store knowledge. Don\u2019t be afraid to face facts, and never lose your<br>ability to ask the questions: Why? and How? Be in this like a child.<br>Don\u2019t be afraid of ridicule; think of the history of all great discoveries. I quote Alfred North<br>Whitehead: \u2018If you have had your attention directed to the novelties of thought in your<br>lifetime, you will have observed that almost all really new ideas have a certain aspect of<br>foolishness when they are first produced.\u2019 Therefore, dare.<br>And should even the great ones of your age try to discourage you, think of the greatest<br>scientist of antiquity, Archimedes, who jeered at the theory of Aristarchus, twenty-five years<br>his senior, that the earth revolves around the sun. Untruth in science may live for centuries,<br>and you may not see yourself vindicated, but dare.<br>Don\u2019t persist in your idea if the facts are against it; but do persist if you see facts gathering on<br>your side. It may be that even the strongest opposition, that of figures, will crumble before<br>the facts. The greatest mathematician who ever walked on these shores, Simon Newcomb,<br>proved in 1903 that a flying machine carrying a pilot is a mathematical impossibility. In the<br>same year of 1903, the Wright brothers, without mathematics, but by a fact, proved him<br>wrong.<br>In religion, the great revelations and the great authorities \u2013 the founding fathers \u2013 belong to<br>the past, and the older the authority, the greater it is. In science, unlike religion, the great<br>revelations lie in the future; the coming generations are the authorities; and the pupil is<br>greater than the master, if he has the gift to see things anew.<br>All fruitful ideas have been conceived in the minds of the nonconformists, for whom the<br>known was still unknown, and who often went back to begin where other passed by, sure of<br>their way. The truth of today was the heresy of yesterday.<br>Imagination coupled with scepticism and an ability to wonder \u2013 if you possess these,<br>bountiful nature will hand you some of the secrets out of her inexhaustible store. The pleasure<br>you experience discovering truth will repay you for your work; don\u2019t expect other<br>compensations, because it may not come. Yet, dare.\u201d<br>Those words are as true today as when Velikovsky spoke them in 1953. Regardless of the<br>controversies surrounding Velikovsky, in this passage, he surely pointed the way forward to<br>the future, in inspiring fashion. However, despite the satisfaction that cosmic heretics may<br>justifiably feel when it finally becomes established that catastrophes of extraterrestrial origin<br>have occurred in the not-too-distant past, each one by a clearly-established mechanism, there<br>will also come increased realisation that what has happened before can happen again. Having<br>begun this presentation with a comforting quotation about beauty from a 19<br>th<br>century poet, let<br>us end with two quotations, more disconcerting in nature, from 20<br>th<br>century poets. However<br>awesome the sight of an approaching cosmic body might be, the possible consequences for<br>Earth and its inhabitants could be fearful. What would be in store for humanity when, in the<br>words of Willian Butler Yeats, \u201ca terrible beauty is born\u201d? The final quotation, possibly<br>answering that question, is an extract from a poem by Rainer Maria Rilke, used previously by<br>Bill Mullen in Pens\u00e9e (Mullen, 1972). Rilke wrote (in translation): \u201cFor beauty is nothing but<br>the beginning of terror which we are barely able to endure\u201d (Young, 2006). Let us hope that<br>we ourselves do not have to experience such an event.<br>References<br>Achenbach, J. 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This immediately received a hostile reception [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5322],"tags":[],"class_list":["post-47695","post","type-post","status-publish","format-standard","hentry","category-archive"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/atlantipedia.ie\/samples\/wp-json\/wp\/v2\/posts\/47695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/atlantipedia.ie\/samples\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/atlantipedia.ie\/samples\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/atlantipedia.ie\/samples\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/atlantipedia.ie\/samples\/wp-json\/wp\/v2\/comments?post=47695"}],"version-history":[{"count":1,"href":"https:\/\/atlantipedia.ie\/samples\/wp-json\/wp\/v2\/posts\/47695\/revisions"}],"predecessor-version":[{"id":47696,"href":"https:\/\/atlantipedia.ie\/samples\/wp-json\/wp\/v2\/posts\/47695\/revisions\/47696"}],"wp:attachment":[{"href":"https:\/\/atlantipedia.ie\/samples\/wp-json\/wp\/v2\/media?parent=47695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/atlantipedia.ie\/samples\/wp-json\/wp\/v2\/categories?post=47695"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/atlantipedia.ie\/samples\/wp-json\/wp\/v2\/tags?post=47695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}