Originally posted by woodypusher http://scienceblog.com/67577/could-a-milky-way-supernova-be-visible-from-earth-in-next-50-years/
Do you know how far away this star is? And why they think it may go nova? If it is within 5000 light years of Earth it could be disaster time. Supernova's are dangerous beasts, you don't want to be anywhere close to them. The fact it may not even be visible to the naked eye is a good sign, could be halfway across the galaxy, say 50,000 light years. Anyway, I won't be around one way or the other unless I live to the age of 122🙂 Hey, it could happen!
Originally posted by sonhouse Do you know how far away this star is? And why they think it may go nova? If it is within 5000 light years of Earth it could be disaster time. Supernova's are dangerous beasts, you don't want to be anywhere close to them. The fact it may not even be visible to the naked eye is a good sign, could be halfway across the galaxy, say 50,000 light years. Anyway, I won't be around one way or the other unless I live to the age of 122🙂 Hey, it could happen!
Wherever it is, it probably already happened many thousands of years ago.
Originally posted by twhitehead Even if we had a magical rocket that could stop supernovas, we couldn't use it. 🙁
More like a thick lead shield in orbit around the Earth or using the moon as a shield, moving it about so it will be between us and the nova. Piece of cake🙂
Originally posted by sonhouse More like a thick lead shield in orbit around the Earth or using the moon as a shield, moving it about so it will be between us and the nova. Piece of cake🙂
However, if we are relying on seeing the nova before we act, we have no hope.
I guess if we analyze all nearby stars we might see signs before it goes supernova.
Originally posted by menace71 http://www.dailymail.co.uk/sciencetech/article-1349383/Betelgeuse-second-sun-Earth-supernova-turns-night-day.html
Apparently we'd be ok if this one goes off but it's under 700 Light Years away
Manny
I would think that having two suns for a week would do major damage to the Earth, although it may depend on what radiation other than visible light we receive.
but what I find amusing about this link is where it says:
"one of its instruments will look to electrically charged particles called electrons for answers. "
What? really? there exist charged particles called "electrons"? -and we didn't all know that!? -so they had to say "charged particles called electrons" and not just simply "electrons" in the above to make sure we know what electrons are else we wouldn't have the foggiest idea what the HELL they are talking about!!! ?
Originally posted by sonhouse Do you know how far away this star is? And why they think it may go nova? If it is within 5000 light years of Earth it could be disaster time. Supernova's are dangerous beasts, you don't want to be anywhere close to them. The fact it may not even be visible to the naked eye is a good sign, could be halfway across the galaxy, say 50,000 light years. Anyway, I won't be around one way or the other unless I live to the age of 122🙂 Hey, it could happen!
Supernova are indeed powerful...
But you don't need to start stocking up on extra strength sunscreen unless its inside of 100 ly away. [probably a lot less]
A gmma-ray burst (pointed right at us) would be dangerous at much greater ranges.
But a regular supernova doesn't threaten us unless it's right in our back yard.
I've read some items on-line and the consensus seems to be between 150-200 L.Y. is about the limit if a supernova went off close to the earth and apparently it also matters where the Gamma Ray burst are aimed
Milky Way Supernova may be visible from Earth in 50 years
02 Nov '13 04:53
Back to Top