সোমবার, ২১ জানুয়ারী, ২০১৩

Earth May Have Been Hit By a Gamma-Ray Burst In 775 AD

I thought a nearby GRB would wipe out all life, all the way down to viruses.

It would. But if it was farther away, it would just create a bunch of radioactive isotopes in the upper atmosphere while leaving life on the ground mostly unmolested.

If only someone had an estimate of how far away this one was, and had presented it in something that would describe this news item in detail. We could call it an "article".

For non-douches who also didn't RTFA, it's estimated at 3000 to 13000 ly away. For comparison, in Phil's book "Death from the Skies" he discusses what would happen as a result of a GRB from 100 ly away, and the result is Very Bad(tm).

Source: http://rss.slashdot.org/~r/Slashdot/slashdotScience/~3/SYPiFV0Og40/story01.htm

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