this post was submitted on 08 Jan 2024
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xkcd

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xkcd #2878: Supernova (imgs.xkcd.com)
submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]
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They're a little cagey about exactly where the crossover point lies relative to the likelihood of devastating effects on the planet.

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[–] [email protected] 58 points 1 year ago (1 children)

Wikipedia (Near-Earth Supernova) says that a 25 ly away supernova would wipe out half the ozone layer so that's probably the lower bound for what we want

[–] [email protected] 21 points 1 year ago (2 children)

Geez, how many stars do we have that close to us?

[–] [email protected] 2 points 1 year ago* (last edited 1 year ago)