Was a Giant Comet Responsible for a North American Catastrophe in 11,000 BC?
ScienceDaily (Apr. 1, 2010) — Some 13,000 years ago the Earth was struck by thousands of Tunguska-sized cometary fragments over the course of an hour, leading to a dramatic cooling of the planet
Giant Comet Responsible for a North American Catastrophe in 11,000 BC?
April 1st, 2010 · No Comments
Tags: History