this post was submitted on 15 Aug 2023
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Showerthoughts

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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.

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Our entire existence may be a sort of stable spacetime bubble that can pop at any moment. (lemm.ee)
submitted 1 year ago by dan1101@lemm.ee to c/showerthoughts@lemmy.world
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Like ants nesting on a river bank, some only live a few days. A colony could live for many ant generations on a riverbank but when a big flood comes their entire world is wiped out.

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[–] terny@lemmy.ml 0 points 1 year ago (1 children)

A white dwarf close to us could go supernova and wipe us without us being able to do anything about it.

[–] SkyeStarfall@lemmy.blahaj.zone 0 points 1 year ago (1 children)

A white dwarf is a remnant of a dead star. It cannot go supernova by itself.

[–] Hexagon@feddit.it 0 points 1 year ago (1 children)

It can, if it's stealing matter from a companion star and it crosses a critical mass threshold (around 1.44 solar masses). Look up "type Ia supernova"

[–] Ranessin@feddit.de 0 points 1 year ago

Which means it does need outside help (even passive help).