Although, having watched the Stones play last night, I am somewhat more concerned about a zombie apocalypse
Definitely a "voice of reason," old corps. But I'm glad to see that Prof. Poole mentioned global warming & disease at the end. My own "end-of-the-world" vision foresees a slow, steady & increasingly wretched global slide into the apocalyptic abyss due to global warming & pandemics -- greased by dying (& rising) oceans, increasing natural disasters, burgeoning overpopulation, depletion of natural resources (and the inevitable wars over them), worldwide famine, etc. Maybe a more sudden Mayan-style apocalypse would be a kinder way out, putting us all out of our predestined (and self-inflicted) misery well in advance. OR, how about something else more sudden & immediate: like if North Korea or Iran ever get their nukes, and spark global conflagration? How's THAT for more realistic gloom & doom?
What we would see as a supernova of Betelgeuse would have actually happened 640 years ago, Seth's distance being incorrect. http://en.wikipedia.org/wiki/Beetlegeuse
According to this writeup, a supernova need to be within 100 light years of Earth to effect it's biosphere: http://en.wikipedia.org/wiki/Near-Earth_su…
also, a list of "nearby" supernova candidates:http://en.wikipedia.org/wiki/List_of_supernova_candidates
FCB Conclusion: No worries.
But what is the radiation radius? What about the speed of light?
Ah! A voice of reason. Now I'll still have to pay the piper for all those Chrismas gifts.
Betelgeuse is 430 light years away from Earth. The impact radius of a supernova from that class of stars is 50 light years.
The world ends everyday for about 150,000 people. Is today your day?
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