I wonder how cold space would actually feel, given there is not much matter to transfer the body heat to. Here's a stack exchange thread where people try to calculate how long it would take to cool down.
Oddly, space is cold but spaceships tend to get too hot. Engines/electroncs/people give off heat inside the ship which gets trapped. You move heat by conduction, convection, or radiation, but because outside is a vacuum you cant disapate heat with the first 2 and are limited to the least effective radiation so the heat builds up
Yeah, a little known fun fact about the Shuttle is that the radiators were on the inside of the bay doors. On achieving orbit they had 4 hours to get the doors open or they would have to scrub the mission before the electronics overheated. The doors never failed and no mission was ever scrubbed for this reason though.
I realised this reading The Expanse. I just didn't think about it enough until then. "Just let the heat out into space duh" doesn't make any sense unless you're venting something with it.
It's doesn't make sense saying space is cold. There is no matter in space, so there is no temperature at all, it's completely isolated. Of course, there is actually matter everywhere in space and that matter is cold, but there is so so little it doesn't make sense to even consider it
It's more accurate to say that space doesn't have a lot of easy access to external heat sources. Your local temperature is pretty much going to stay your local temperature without some significant effort being put into it. If you're a rock, that's cold. If you're a spaceship full of humans and electronics that continually emit heat to operate, you're going to stay pretty warm and shedding heat is an engineering problem that must be solved.