Moontanman Posted April 3, 2010 Report Posted April 3, 2010 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, according to astronomer Professor Bill Napier of the Cardiff University Astrobiology Centre. Was a giant comet responsible for a North American catastrophe in 11,000 BC? Quote
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