Out space is very cold. 🥶 ​

@stux its just a few kelvins near earth. somethng like -270 C

@freemo That's bloody damn cold if you ask me ​ brrr

@stux I do suggest a sweater and scarf yes :)

Interesting fact, despite being super cold it is rather tricky to cool things in space... cause physics :)

@freemo Not gonna cut it ​

Ah yes true! The heat cannot go anywhere! You know.. now air and shizzle or other transport vroom vroom

@stux well you can still get the heat off of things. But you are limited to one of the three heat transfer methods, radiation. Ther eis no convection or conduction.

@freemo @stux

You can also evaporate something (but only as long as you have something to evaporate). Surprisingly many spacecraft used evaporative cooling at least sometimes (Gemini had an evaporator that seemed to have been used at low flow continuously, Apollo LM was cooled purely by evaporation, Apollo CSM had an evaporator to allow higher heat rejection rates than by radiators alone and as the sole way to dispose of heat after the SM was gone, Shuttle had an evaporator to cover high heat load intervals and, I assume, to help in the case the payload doors won't open).

@izaya @stux @freemo

Wikipedia doesn't say anything about water droplet radiators behind able to handle higher temperatures. I also don't understand how would that be possible: the liquid, before being sprayed has to be pumped through pipes, so we need to have a material that can withstand that temperature (and I naively expect that adding the "has reasonably high thermal conductivity" requirement doesn't narrow things that much; does it?).