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viscence t1_jchxkmb wrote

The sun manages to transfer heat through a vacuum just fine -- radiatively, by emitting photons of light. That is also how the earth loses heat. Like the sun, the earth has a temperature and therefore glows, radiating away heat. The earth is a lot colder than the sun, so it radiates much less, and invisibly in the infrared.


BloodshotPizzaBox t1_jci5svo wrote

Just to add: the thing you want to google to learn more about this is "black body radiation" or "thermal radiation."