Victor Clube & Bill Napier are two British Astronomers, who published The Cosmic Serpent . in 1982, which was later revised as The Cosmic Winter ,>which was also the title of a lecture given by Clube(b).<
They have promoted what became known as ‘Coherent Catastrophism’, which envisions encounters between our Earth and large comets, events that are recorded in ancient history and mythology. They claim, for example, that the biblical Exodus story contains an early reference to Halley’s Comet! Among other encounters, they date the story of Phaëton, mentioned by Plato, to 1369 BC and also discuss catastrophic close encounters with Encke’s Comet or a proto-Encke.
Although Clube & Napier do not refer to Atlantis, from time to time, some commentators have claimed some connection between the demise of Atlantis and encounters with comets named and unnamed.
Philip R. “Pib” Burns has an extensive overview(a) of Clube and Napier’s work on his excellent website.>It is argued by some that Clube & Napier should have given greater recognition to the theories of Immanuel Velikovsky(c).<
The Younger Dryas Impact Hypothesis (YDIH) is based on the claim that around 12,800 years ago the Earth had an encounter with a very large asteroid or comet that broke up in an airburst over North America and of which some fragments possibly hit the ground directly(a).
Many effects that have been linked with this event with varying levels of enthusiasm including a suggested association with the demise of Atlantis. Elsewhere, megafaunal extinctions, cataclysmic floods, the disappearance of the Clovis people and the creation of the Carolina Bays(g), have all been proposed as consequences of this episode.
In 2006, Richard Firestone, Allen West & Simon Warwick-Smith published the foundations of the YDIH in The Cycle of Cosmic Catastrophes . A year later the hypothesis had a more public airing at the American Geophysical Union Press Conference, Acapulco, Mexico, May 23(d). This was followed the same year by the publication of a formal paper in the Proceedings of the National Academy of Sciences of the United States of America(f).
Since then volumes have been written on the subject, both pro and con(c).
A 2014 paper(h) entitled Nanodiamond-Rich Layer Across Three Continents Consistent with Major Cosmic Impact at 12,800 Cal BP by Charles R. Kinzie et al., has developed further the idea of this event being associated with the Younger Dryas. In a similar vein is an article(f) from Megan Gannon.
December 2014 saw Graham Hancock raising the issue of a cometary cause for the Younger Dryas and its possible association with ancient Egypt(e).
Michael Jaye is Associate professor at the Naval Postgraduate School, in Monterey, California. He is a confirmed catastrophist focused on cometary impacts. In a lecture to the Geological Society of America in 2011(a) he describes two major events in the Earths history that had profound effects on the earth and the life one. The first was a double impact 65 million years ago and generally accepted to have led to the demise of the dinosaurs and the second 460,000 years ago.
In an April 2015 lecture entitled Resolving the Problem of Atlantis he expands on his original ideas(b) introducing a third event 13,000 years ago when another cometary impact brought an enormous amount of water to earth, which linked together previously disconnected seas and oceans.
At this point he introduces Atlantis or more correctly the alleged Google image of Atlantis in the Atlantic Ocean that Jaye now claims was the Plain of Atlantis. As I have previously stated, the image in question shows lines that would have been kilometers in width and could not have been streets and so are also too wide to have been the irrigation ditches described by Plato. The U.S. National Oceanic and Atmospheric Administration has also debunked the silly Atlantis claims generated by these images(e). However the problem remains, that some people believe what they want to believe not what can be demonstrated.
Jaye does not accept the explanation for these anomalous lines given by Google, joining conspiracy theorists in the process. I personally think that he should stick to geology and leave the subject of Atlantis to others.
Jaye has also given me a link(c) to a video of one of his lectures. In it, one of his claims is that most of the Earth’s water is the result of a collision with an icy comet around 12,800 years ago. However, the widespread distribution of fossil fish far exceeds the areas occupied by original unconnected bodies of water suggested by Jaye. This is just one of many inaccuracies offered by him. His ideas can be read on Graham Hancock’s website(d) and his 2017 book, The Worldwide Flood .
Jaye has failed to explain how his claim of a relatively recent acquisition by the Earth of most of its water, can account for the recurring Ice Ages that our planet has endured over many millions of years. Ice Age theory is well established, but according to him, the Earth would not have had enough water over that timespan to produce the glaciers that enveloped large areas of the globe, sometimes to a depth of 3 or 4 km, leading to the measurable isostatic rebound we still experience today.
Trevor Palmer (1944- ) is an English Professor of Biology now living in Scotland. Apart from his day-job of enzymology and the study of genetic disorders, which led to an interest in evolution, which in turn brought him to research catastrophism, he has written several books on these subjects, including Perilous Planet Earth, which places today’s “concern about the threat to Earth from asteroids and comets within a historical context.” He devotes two chapters of this comprehensive work to the subject of Atlantis, in which he reviews (chap.13) some of the late 19th and early 20th century theories as well as more recent developments (chap.28) exposing many of the weaknesses in the arguments on offer.
While Palmer does not express any personal views on the subject, it is noteworthy that he wrote an introduction to the 2005 Barnes & Noble edition of Lewis Spence’s The History of Atlantis. After a brief look at Spence’s life, Palmer gives an overview of the principal strands of Atlantology today and concluded that many of the issues debated 80 years ago are still unresolved and for that reason, Spence’s book continues to be worth studying.
Palmer wrote a short paper(a) in 1987 in which he was cautiously sceptical of the Atlantis story, particularly the possibility that it was destroyed during the Late Pleistocene era, with which I concur. He also touched on the subject of the Carolina Bays, apparently adding support to the now-discredited idea that they were created by wind action. I expect that he may have modified his views by now.>However, the US Geological Survey is now (2021) identifying the bay as ‘relict thermokarst lakes’.(h)
Palmer presented a paper entitled Catastrophes: The Diluvial Evidence at the Society for Interdisciplinary Studies (SIS) Silver Jubilee Conference in September 1999.(i) He also addressed the SIS in 2004 on the background to his book published the previous year(d).<
Palmer has written two papers(b)(e) on the history of catastrophism from the time of Velikovsky and the ensuing debates, until the present, when catastrophism has greater acceptance and which now offers a variety of competing ideas regarding the number, source, date and consequences of specific catastrophes.
Palmer has also written a 2018 review(c) of Perilous Planet Earth in the light of developments since it was first published.
Palmer and Gunnar Heinsohn have been debating Heinsohn’s claim that our chronology of the 1st millennium AD is deeply flawed, on the Q-Mag website(a). Palmer has also written a lengthy paper supporting his views(a).
(a) See Archive 3026
In 1992 together with his geologist wife Edith, also now deceased, he published a work describing two cometary collisions in the 11th and 8th millennia BC. This is available online in German with the Introduction in English(d). Frank Dörnenburg has written a highly critical review (in German) of this book, concluding with the comments – Alles in allem habe ich mit ein wenig Internetsuche und Schulstoff die Basisbeweise des Buches aushebeln können, und diese nicht auf Fehler sondern unzweideutige Manipulationen der Autoren zurückführen können. “All in all I have with a little Internet search and schoolwork can nullify the basic proofs of the book, and this can not be reduced to unambiguous error but manipulation of the authors. Ich kann Autoren die bei so etwas derart dreist zu Werke gehen nicht trauen, und jeden Beleg nachzuprüfen ob sie wenigstens da die Wahrheit gesagt haben, dafür ist mir meine Zeit zu schade. I can authors with something so brazenly works will not be trusted, and verify each document if they have at least as telling the truth, but my time is too precious.” (Google translator)
With a mass of technical data they also claim that there was an earlier impact around 11,000 BC when a comet struck the northern hemisphere in fragments.
Wikipedia offers an interesting critical review(b) of the Tollmanns’ theory, while the Golden Age Project established by Christian O’Brien presents a more sympathetic assessment(c).
These Late-Glacial impacts are suggested as the cause of the ‘Debacle’ flood in Ontario and the ‘Spokane Flood’ in the Columbia Basin. The Tollmans then claim that a second cometary impact occurred in 7552 BC that broke into seven pieces, one of which fell in the Atlantic. They maintain that the consequences of this event were the Flood of Noah and the Holocene Extinctions.
The Tollmanns backed up their claim with the results from field studies around the Köfels crater in the Austrian Tyrol. In 2008 two British researchers, Alan Bond & Mark Hempsell, controversially proposed that the Köfels impact was caused by an asteroid that was recorded on an Assyrian cuneiform tablet, which itself is a copy of an earlier Sumerian document dated to 3123 BC. It is also suggested that the same event was responsible for the destruction of Sodom and Gomorrah.
Towards the end of his life Tollman appears to have become somewhat irrational, for example, on the basis of the prophecies of Nostradamus as well as a local ‘prophet’, Alois Irlmaier, together with the solar eclipse of August 11, 1999,and other signs, he predicted a global catastrophe for August 1999 and retreated to a bunkered existence, fearing the impending destruction(f).
Over ten years later other scientists claimed that a field of craters around Lake Chiemsee, in southeast Bavaria, was caused by fragments from a huge comet or asteroid that broke up in the atmosphere(a). The Wikipedia entry for the ‘Chiemgau impact hypothesis’ dismisses the hypothesis as an “obsolete scientific theory”. However, others beg to differ(g)(h).
It should be noted that Lake Chiemsee is just north of the Austrian border and only about 50 km from the Köfels crater. Artefacts, including coins, seem to have been strongly heated on one side. This fact, together with Roman reports of stones falling from the skies and dendrochronology has suggested a date of around 200 BC for the event.
(f) See Archive 2968) mixed German & English
Mike Baillie is Emeritus Professor of Palaeoecology in the School of Archaeology and Palaeoecology, Queen’s University, Belfast. He is a dendrochronologist of world renown, who outlined in his recent book  the evidence for catastrophic encounters with asteroids or comets over the past five millennia that opened a whole new chapter in the search for the truth about our past. Baillie ascribes these events to 2354-2345 BC, 1628-1623 BC, 1159-1141 BC, 208-204 BC and 536-545 AD. He touches on a number of legendary and historical events such as the Deluge, the Exodus and King Arthur, but seems to studiously avoid any direct reference to Atlantis. Nevertheless, his theory in conjunction with the suggestions of writers such as Emilio Spedicato enhances the possibility of the destruction of Atlantis being a consequence of a more widespread catastrophe.
In 2004 it was revealed that a very large comet or asteroid, estimated to be ¾ of a mile in diameter, crashed into what is now Germany. The date is calculated at 200 BC, which coincides with one of Baillie’s dated catastrophes. A crater field stretching from the town of Altoetting to Lake Chiemsee is all that remains today.
Perhaps even more relevant to our study was a PowerPoint presentation(b) from Baillie to a Quantavolution Conference in Athens in 2011, which offered compelling evidence for a catastrophic event in 2345 BC. His data reinforces the work of George Dodwell who demonstrated with his study of ancient gnomons, decades earlier, that something dramatic happened to the rotational axis of the Earth in 2345 BC, which is possibly the same 2346 BC encounter with a comet proposed by William Whiston in 1696. At the same conference Baillie also presented evidence for dating the eruption of Thera to 1628 BC.
Baillie is also co-author with Patrick McCafferty of a fascinating work that reinterprets some of the heroes and gods of Celtic mythology as a coded account of our ancestors’ observation of a close encounter or impact of comets with the Earth. However, Baillie’s books should be read in conjunction with an equally compelling volume(a) by David Talbot and Wallace Thornhill who offer a complementary but rather than conflicting interpretation of early man’s perception of highly visible cosmic events. Talbot and Thornhill have linked ancient myths and thousands of petroglyphs with their view of an electric universe, where large-scale plasma phenomena were witnessed and recorded by preliterate man. Their book has drawn extensively on the work of Dr. Anthony Peratt, who has gathered and classified an enormous database of petroglyphs from all over the world(d) that are apparently a record of celestial demonstration(s) of plasma physics.
(c) https://www.cais-soas.com/CAIS/Religions/non-iranian/Judaism/Persian_Judaism/book6/pt1.htm (half way down page)