this post was submitted on 08 Jul 2025
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Science Memes

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[–] [email protected] 7 points 3 days ago (24 children)

Thanks! I was about to ask if there is time for the pressure differences to act upon our biology, or if the freezing bit happens before everything has a chance to go pop!

[–] [email protected] 10 points 3 days ago (14 children)

You don't really freeze because in a vacuum you lose heat very slowly. You'd suffocate long before that. Or, as previously mentioned, go pop

[–] [email protected] 7 points 3 days ago (8 children)

Hmm, is it because vacuum acts essentially like an insulator? I'm thinking this because, from what I remember about high-school thermodynamics, heat needs to "jump" from matter to matter, and there's not a relevant quantity of matter in a vacuum to act as a heat absorber, like air does over here, right?:-?

I'm genuinely asking, I'm sure I have brain rot from watching too many sci-fi movies...

[–] [email protected] 12 points 3 days ago (1 children)

I'm not sure that I'll get the English terms wrong but basically heat can move in three ways:

  • By convection, aka liquids and gases moving around when theire heated. Obviously this doesn't happen in space
  • By conduction, a hot thing thouches a cold one and heat transfers from hot to cold. And, this neither works in space
  • By radiaton. Hot objects radiate heat as electro magnetic waves (ie ligth). This is the only one that works in a vacuum and this process is rather slow. Also this results I the weird phenomenon that good looking people cool down faster in space since their hoter. Therefore we should only recruit bad looking astronauts, but no one seems to have figured that out
[–] [email protected] 1 points 3 days ago

Thank you, this makes a lot of sense!

Also, guess I missed my mark, would've been the ideal astronaut based on this! Does being dumb also help help? I mean, less going on up in the ol' noggin, thinking energy is transferred slower that way:))) Or that I use less, which would make me fuel-efficient!=))))

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