Re: The Extinction Challenge

John Clark (jonkc@worldnet.att.net)
Sun, 1 Aug 1999 22:01:07 -0400

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CurtAdams@aol.com Wrote:

>But even by your figures, a 100 kg mass would expect 2 x 10^7 hits from
>a supernova 2 ly away. In a body of many billions of cells, that's quite
>trivial. Only about 1 cell in a 1000 will take a hit, and the vast majority
>of hits don't do anything significant.

An Alpha particle will kill or mutate any cell it hits, a rare neutrino that hits would be almost as deadly.

                       John K Clark      jonkc@att.net



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