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Re: Theories on the extinction of dinosaurs
> >>which is about 25% higher than now, that it
> was already falling toward the present level, and had been doing so for some
Oops, that was a description of Dudley's CO2 levels. His oxygen was climbing
into the early Tertiary. My memory failed me. Sorry.
> , not because the sun
> explodes, but because all our atmosphere boils away and we're left with
> Mars's air.
> That would be unpleasent. :)
Unlikely, till the sun leaves the Main Sequence. At that time, you can count
> Mmm, Actualy, the Permain Extinction was much, much worse, and I don't think
> impact is a big theory for that one.
Quite true, and I don't think the asteroid was the 'Only Cause' for the
> Asteriods (inless they're really
> big) don't do half as much damage as those subtle, chemical changes.
> I bet that even if an asteriod the size of the Moon hit us (knocking a good
> chunk of the
> Earth's crust
> into orbit) there would still be bacteria after it was all over. Those
> things are
I'm not sure they are hardy enough to survive having all their chemical bonds
having their bodies converted to plasma. Given a Moonstrike, you're talking
pretty healthy conversion of kinetic to thermal energy.