Sweatman. Martin B.
Martin B. Sweatman is a geochemist at the University of Edinburgh who gained wider recognition with the publication of PreHistory Decoded  in 2019. In it, he discusses many subjects dealt with in this compilation, such as Göbekli Tepe, Younger Dryas, and the Sphinx offering what the book’s subtitle describes as “a science odyssey unifying astronomy, geochemistry and archaeology.”
Building on the work of Clube & Napier he believes that around 10,900 BC an encounter with a fragment of Comet Encke led to catastrophic climate change of the Younger Dryas and kick-started the Neolithic Revolution. After an in-depth study of the carvings at Göbekli Tepe, he believes that they record astronomical events and in a 2017 joint paper with Dimitrios Tsikritsis, published in Mediterranean Archaeology and Archaeometry, (Vol.. 17, No 1) they offer an illustrated outline of this theory(a).
>In 2021, Sweatman published two papers on the Researchgate website about the Younger Dryas Impact theory(e)(f).
He has also published a paper also on the Researchgate website in which he argues that knowledge of the precession of the equinoxes was known as far back as palaeolithic times(d).<
Sweatman had previously used his scientific training to decode an early zodiacal system found across western Eurasia, from European Palaeolithic caves to sites in Turkey, Egypt and Mesopotamia. He has now gone one step further by linking Pictish symbols to this system.(b)
For balance, I offer a link to a critical review of Sweatman’s theories(c).
(a) The_Younger_Dryas_impact_hypothesis_MBS.pdf (ed.ac.uk)
(c) Martin Sweatman’s Decoding of Prehistory: Incoherent Catastrophe • The Lateral Truth (skepticink.com)
(d) https://www.researchgate.net/publication/325543926_Decoding_European_Palaeolithic_art_Extremely_ancient_knowledge_of_precession_of_the_equinoxes *
(e) https://www.researchgate.net/publication/351721338_The_Younger_Dryas_impact_hypothesis_Review_of_the_impact_evidence *
(f) https://www.researchgate.net/publication/357089634_Response_to_a_comment_by_Jorgeson_Breslawski_and_Fisher_on_The_Younger_Dryas_impact_hypothesis_Review_of_the_impact_evidence_by_Sweatman *