From: Anders Sandberg (asa@nada.kth.se)
Date: Wed Jul 07 1999 - 13:27:27 MDT
"Danny Yavuzkurt" <ady1@psu.edu> writes:
> http://news.bbc.co.uk/hi/english/sci/tech/newsid_388000/388291.stm
> Apparently, there was a *very* nearby supernova "a few million years ago",
> according to German astronomers.. only 90 to 180 light-years away..
> supernovae are no longer merely theoretical influences in the development of
> this planet's climate and lifeforms..
It also shows that nearby supernovae aren't necessarily
planetkillers. As far as I know there was no major extinction the last
million years. Although maybe it got the current ice age started...
If you look at the nearby interstellar medium it is clear that there
are "bubbles" made by novae just about
everywhere: http://spacsun.rice.edu/~twg/lism.html
-----------------------------------------------------------------------
Anders Sandberg Towards Ascension!
asa@nada.kth.se http://www.nada.kth.se/~asa/
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