Space Suit
A space suit is a garment worn to keep a human alive in the harsh environment of outer space, vacuum and temperature extremes. Space suits are often worn inside spacecraft as a safety precaution in case of loss of cabin pressure, and are necessary for extravehicular activity, work done outside spacecraft. EVA suits, such as the EMU, are used outside spacecraft, for either planetary exploration or spacewalks.
Space suit is heavy and has four layers. The layer next to the skin contains water which cools the body. The second layer contains
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