this post was submitted on 15 Jun 2023
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I can answer that: the Sun going supernova would most likely trigger a mass-extinction event on Earth. Time to start writing grant letters
We have a lower bound of 1 AU then!
So we probably wouldn't want that to happen either, but I don't know if that would cause specifically an extinction event.
Also the star most likely to cause a near-earth event is IK Pegasi which is about 150 light years away.