[deleted] t1_j25jc1h wrote
Reply to comment by JustAnotherRedditAlt in How likely is it that Betelgeuse will supernova? by tempejkl
Unless it already supernova-ed and the evidence hasn't reached us yet.
ThumbsUp2323 t1_j25jopn wrote
Right it could have happened 699 years ago and we'd have absolutely no idea.
JustAnotherRedditAlt t1_j26o089 wrote
Well, there will likely be increased activity some years (or centuries) before it actually goes boom...
ThumbsUp2323 t1_j26pvdx wrote
Like regions of the star's surface rapidly cooling unexpectedly? Gargantuan clouds of gas exploding thousands of miles into space? The fallout from these eruptions being so dense and vast that it reduced the star's brightness by more than a factor of 2?
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