Off Topic — HabitableZone

Off Topic » in reply to re: Not likely either.

A supernova or hypernova are definite possibilities

The radiation from a nearby one of those would end life on Earth quite quickly.

http://imagine.gsfc.nasa.gov/docs/features/news/20may99.html

Keep an eye on Betelgeuse, a red supergiant sun a mere 472 light years
away located in Orion. Some winter we may get a new Star....

http://en.wikipedia.org/wiki/Betelgeuse

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