Betelgeuse could go supernova within our lifetimes

Well, some of us.

https://earthsky.org/brightest-stars/betelgeuse-will-explode-someday/

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Tetsuya · 51-55, M

it's about 642 light years away, it may have already gone off
or
if it explodes today nobody will know for about 642 years

DunningKruger · 61-69, M

@Tetsuya Yes. The paper estimates we'll see a supernova in around 10 to 100 years.