The sun warms up our planet but space is cold. If I lit a candle and stood 20 feet away, I could see the light but not feel the warmth. So, why do we feel warmth from the sun but space isn’t warmed by it?
In: 512
Because there isn’t much there to warm up.
Even so, the temperature of space doesn’t matter all that much since there so little conduction involved and no convection. Compare standing in cold air vs jumping into a pool of cold water. Being more dense, the water is a much better conductor of heat and you feel colder much faster. This is actually a problem in space, as it is much harder to cool down sensitive electronics.
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