Hi Swanny,
I've settled in with an astronomy theory, along these lines. It was a p4blo post about Marduk that lead me to it! I was very happy about that, since a collision with earth now doesn't make sense - if the asteroid belt and our moon is what's left of Nibiru's/Marduk's last flyby. This solar system is configured differently from ancient times now, as a result of the previous collision, so the same event couldn't happen.
It's a theory!
Planet X - Is a Runaway Wrecking Ball Part of Our Solar System?
Ancient Sumerian texts indicate that the Earth (" Tiamat ") was struck by a large planet, which moved it into its present orbit, and created the Moon and the Asteroid Belt. In his books, The Twelfth Planet and The Cosmic Code, Zecharia Sitchin outlines this "celestial battle" as described in the Babylonian text called Enuma elish. The planet "Marduk" (the Sumerian " Nibiru "), as it came into the solar system on its clockwise elliptical course, struck Tiamat, which was moving in its ordained counterclockwise orbit. http://www.subversiveelement.com/Planet_X.html