Not really. (Disclaimer: I'm not an expert at all, much of what I say is wrong)
Consider your CPU's heat sink. The CPU gets hot, but it can transfer that heat to your metallic heat sink (thermal conduction?), which in turn can dissipate that heat to its surrounding air (thermal convection?).
If you're in space, the only way to get rid of that heat is by radiating it as light (radiation; the same way a metal glows white hot) but that's much less efficient. You can't transfer it to another mass because there isn't other mass in a vaccuum.
to give brudgers as much credit as possible, space is a pretty good heat sink, in that it can absorb all of the heat you can ever produce, without changing temperature. (and since heat transfer is proportional to temperature difference, your transfer rate will never drop because of it.)
but it is terrible for heat transfer.
the metal widgets we stick onto our CPUs aren't really heat sinks, they're for reducing the thermal resistance between the CPU body and the atmosphere, which is the "final" destination for the heat.
One of the issues with the LM was getting rid of heat from the electronics. The Aft Equipment Bay was mounted external to the LM[1], and had to use active cooling (some sort of sublimation system according to [2]).
Consider your CPU's heat sink. The CPU gets hot, but it can transfer that heat to your metallic heat sink (thermal conduction?), which in turn can dissipate that heat to its surrounding air (thermal convection?).
If you're in space, the only way to get rid of that heat is by radiating it as light (radiation; the same way a metal glows white hot) but that's much less efficient. You can't transfer it to another mass because there isn't other mass in a vaccuum.