NASA sucks all the oxygen out of a room and replaces it with liquid nitrogen in order to test the astronauts and equipment for cold. They can experience -250 C to 250 C while on space walks.
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Space Center Houston
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NASA sucks all the oxygen out of a room and replaces it with liquid nitrogen in order to test the astronauts and equipment for cold. They can experience -250 C to 250 C while on space walks.
