Q&A: Supernova Remnants and Neutron Stars
How long do we have before the Sun
goes supernova and fries us? Supposing this does happen, are any other
planets capable of maintaining human life?
Astronomers believe that our star, the Sun, is not massive enough to become
a supernova. Instead, in about 5 billion years it should dramatically
expand to become a red giant and will fry the Earth in that way. It's less
dramatic than with a supernova, but the Earth will eventually be
destroyed. There are probably many other planets in our galaxy that are
capable of maintaining human life, but astronomers haven't detected any
planets like this because our telescopes are not yet powerful enough.
Information on Tidal Disruption in the Milky Way: