Marduk & Tiamat
Marduk & Tiamat were two of the leading gods of the Babylonian pantheon (a). The controversial writer Zecharia Sitchin, in The Twelfth Planet [1599], identifies Marduk and Tiamat as planetary bodies that were involved in a re-ordering of the solar system through catastrophic collisions some millions of years ago (b). However, his proposed Sumerian cosmology includes another planet in our solar system, ‘Nibiru’ with an orbital period of 3,600 years, whose inhabitants visited Earth during their previous close encounters and genetically manipulated the development of humans!
Now, Stuart L. Harris has published a paper(c) naming a body, Marduk/Nibiru, that had a number of close encounters with Earth causing global catastrophes, which included the destruction of Atlantis in 9577 BC, which he believes had been situated in the North Atlantic near Rockall. He proposes that this event generated a tsunami 1,500 metres high that swept across Europe. Harris also credits Marduk with the destruction of the planet Tiamat, which led to the creation of the asteroid belt.
The Babylonian Marduk is frequently associated with the Greek Phaëton.
(a) https://www.ancient.eu/Marduk/
(b) https://www.tokenrock.com/explain-tiamat-planetary-theory-144.html