this post was submitted on 10 Feb 2026
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[–] salvaria@lemmy.blahaj.zone 11 points 3 months ago (3 children)

The average temperature of the universe today is approximately 2.73 K (−270.42 °C; −454.76 °F), based on measurements of cosmic microwave background radiation.

https://en.wikipedia.org/wiki/Absolute_zero

Cited from https://www.abc.net.au/science/articles/2003/09/25/947116.htm

[–] AeonFelis@lemmy.world 5 points 3 months ago (2 children)

Wonder how they calculated the "average" temperature. Was it weighted by mass or by volume?

[–] Feathercrown@lemmy.world 3 points 3 months ago (1 children)

Only mass-weighting really makes sense here imo

[–] Einskjaldi@lemmy.world 2 points 3 months ago (1 children)

Wouldn't that be just star and not star?

[–] AeonFelis@lemmy.world 1 points 3 months ago (1 children)

No - it'd mostly be dark matter vs not dark matter.

[–] Feathercrown@lemmy.world 1 points 3 months ago* (last edited 3 months ago) (1 children)

I'm still on the "dark matter isn't real" train. It would be so unsatisfying if it was the answer.

[–] AeonFelis@lemmy.world 2 points 3 months ago

Dark mind is definitely real though

[–] vin@lemmynsfw.com 1 points 3 months ago

Doesn't matter, it's just the eventual temperature of a black body kept in deep space

[–] flying_sheep@lemmy.ml 3 points 3 months ago

That's purely academic. IRL what actually matters is “how big and reflective is the thing you're in”.

You'd get real hot real fast in a matte black space suit.

[–] tomiant@piefed.social 1 points 3 months ago

Well yes, because space is not actually a complete vacuum.