posted on Dec, 20 2006 @ 06:07 PM
I believe this falls under the Panspermia theory.
I suppose I see a kind of logic in why they assume what they
have, but at the end of the day it's all still theory and conjec-
ture, as we don't really have enough proof to prove Panssper-
mia to be correct.
I think that it would be possible for life that is highly resistant
to heavy radiation to have evolved her on Earth, I seem to
remember reading a few months ago that it as ofund that life
started on Earth at an earlier time than had been previously
thought, and in much harsher conditions as well.