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Possible supernova in progress (30-40 million years ago)

An Italian astronomer is proposing that in the M95 spiral galaxy a type-II supernova has begun (March 16th discovery). It may become bright enough to see with smaller telescopes but not bright enough for the naked eye. Since supernovas give off large amounts of gamma radiation (harmful to life) it's probably a good thing that it's not really bright and/or pointed at us.

For a type II event the star must be between 9 and 50 times more massive than our sun and will have enough power to fuse heavier elements such as nickel and iron. When these stars explode they do so with enough force to blow off their outer core up to almost a quarter the speed of light, enough force to further fuse elements heavier than iron.

http://blogs.discovermagazine.com/badastronomy/2012/03/19/breaking-possible-supernova-in-nearby-spiral-m95/
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