Betelgeuse as possibly pre supernova - what are the closest and most
sg1
Wikipedia that it is possibly in a pre supernova stage, perhaps to
explode in a few thousand years. In thinking about the ecological
consequences of this, being mindful that Betelgeuse's spin axis is not
pointed toward the solar system, I still would like to estimate the
magnitude of any possible effects here-then.
For this purpose I would like to know the
locations and estimated dates of the closest supernova remnants to the
solar system, i.e. how long has it been since a comparable event.
Any remnant within ~1000 l.y. would seem reasonable. This would
include of course the closest pulsars, etc. It is complicated since
for times long ago we need to include the effects of galactic orbital
motion, etc. Still, interesting
Thanks
Also posted to sci.astro
Phillip Helbig---remove CLOTHES to reply
<62f18eb9-d0bd-47d4...@j39g2000yqh.googlegroups.com>, sg1
<sigol...@gmail.com> writes:
> I notice from APOD that Betelgeuse is ~640 l.y. away, and from
> Wikipedia that it is possibly in a pre supernova stage, perhaps to
> explode in a few thousand years. In thinking about the ecological
> consequences of this,
What types of consequences? In sci.physics.research, there was a thread
recently about the brightness of Betelgeuse as a supernova. Conclusion:
bright enough to be interesting, but not bright enough to be dangerous.