this post was submitted on 25 Feb 2026
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Depends how far you are from the Sun
No, in general
There only way to expell heat is via radiation, which is very slow
https://youtu.be/-w6G7VEwNq0
Interesting, I didn’t know that
Yeah, getting rid of heat is the main issue in space. Insulating against cold is trivial.
But the principle behind it is why vacuum insulated tumblers can hold ice/hot liquid for so long.