(urth) What's So Great About Ushas?

[brunians at brunians.org]

What happens in the volume of space around a supernova when the radiation
wave goes through it? Would anything living here survive if Sirius went
supernova? Perhaps some thousands or millions of years something else will
arise....



.

> brunians at brunians.org wrote:
>> Oh no, the one supernova a year is the total number of supernovas. I was
>> speculating maybe an occasional one happened less than by pure chance.
>> And
>> supernovas are huge events, clearing out big chunks of galaxies.
>
> Where on earth did you study Astronomy?! Supernovas actually increase
> the number of stars in a galaxy when their shockwaves cause nearby
> nebulas to clump and collapse into new stars.
>
>
>> Plain old
>> novas happen about three and a half times a year in just this galaxy
>> (according to http://www.springerlink.com/content/h0661351216h1326/) and
>> are sufficient to wipe out a stellar system. It's not inconceivable that
>> intelligent beings might learn how to make one happen.
>
> Since a nova involves a post-red giant stellar remnant, the solar system
> is already destroyed except for the close companion star necessary to
> supply mass for the nova events. There won't be any naturally habitable
> planets left, and anyone resettling the system will be able to see what
> they could be in for.
>
> --
> Jeff Wilson - jwilson at io.com
> < http://www.io.com/~jwilson >
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