(at around 1h 2 mins) During the "space jump", one of the crew members freezes solid in a couple of minutes. Space is very cold, but objects in a vacuum cool down extremely slowly. The heat in the object has to go somewhere. On Earth, the heat would be transferred to the cold surroundings, such as the air, by contact. In a vacuum, there is nothing to transfer the heat to, so objects that are warm stay warm for a long time. This is the principle behind vacuum flasks. The only way an object in a perfect vacuum can cool down is by electromagnetic black-body radiation. A person would radiate about 1000 Watts (57 BTUs per minute) in this situation, which is only about 7 times more than they would radiate in a 68° F (20C) room.
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05/03/2025 alle ore 08:31
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