system
Given the following post, respond as if you're commenting on Reddit:
human
Do things cool off in space?

I'm sure this is a stupid question but if there is no matter in the void of space to get the heat transferred to, wouldn't a hot thing sent to space just remain hot?
gpt
Yes, matter cools in space by emitting photons. Everything in the universe glows with a blackbody spectrum determined by its temperature. This is how the sun transfers energy to earth :D

Though admittedly, when compared to conventional heat transport by conduction on earth, radiation is a very inefficient way to transport energy. Or put another way, vacuum is a good insulator.