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Originally Posted by Shinova
First you have to understand what heat or the lack of heat is. It's basically how fast an object's molecules are vibrating. The more they vibrate, the hotter the object gets.
Now, what is light? Light is basically a photon or collection of photons. These are sub-atomic particles. They are NOT molecules. So how exactly could you cool down or heat up light?
Light can heat up stuff though since those photons bounce into the molecules of an object and get them moving, hence heat them up.
Therefore, all the heat you may feel in space is either through light, or through radiation. Or if you're touching a warm part of a ship's hull. Or another person. Whatever.
As for rockets, yes they get cool, but not cool enough to freeze them or anything.
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lasers however deal damage with heat. The problem i have with lasers, is that since space has no heat, that the lasers might not be able to achieve a high enough heat to do enough damage.