- #71
KristijanT
- 28
- 0
Hi! I've been really busy these (20) days,so,I haven't checked the thread (and haven't missed anything,obviously).
I'm here to ask some questions specifically about GRB's(yep,gamma-ray bursts).
For one,what would be an approximate minimum distance at which we are safe from one?
Also,how (little) predictable are they? Warning signs,anything...?
Aaaaaaand,also something that confused me:
To quote from foxnews.com...:
"Earth may lie in the path of a dangerous gamma-ray burst that could wipe out a quarter of our atmospheric ozone. Astronomers say WR 104, a Wolf-Rayet star about 8,000 light years away, could go supernova any day, which would generate gamma-rays that could reach earth."
Uhm,yeah,it can -- but since it's 8000 ly away,doesn't it mean that even if it goes supernova exactly at this moment -- we'll feel the effects here on Earth 8000 years later?
I'm here to ask some questions specifically about GRB's(yep,gamma-ray bursts).
For one,what would be an approximate minimum distance at which we are safe from one?
Also,how (little) predictable are they? Warning signs,anything...?
Aaaaaaand,also something that confused me:
To quote from foxnews.com...:
"Earth may lie in the path of a dangerous gamma-ray burst that could wipe out a quarter of our atmospheric ozone. Astronomers say WR 104, a Wolf-Rayet star about 8,000 light years away, could go supernova any day, which would generate gamma-rays that could reach earth."
Uhm,yeah,it can -- but since it's 8000 ly away,doesn't it mean that even if it goes supernova exactly at this moment -- we'll feel the effects here on Earth 8000 years later?