space suit
Sign in to savegas-tight protective suit for astronauts who are in the vacuum of space
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A space suit is a gas-tight protective suit that allows astronauts to survive and work outside their spacecraft in the vacuum of space. It matters because without this specialized equipment, the extreme conditions of space—including the absence of air to breathe and protection from temperature extremes—would make human spaceflight beyond the spacecraft impossible.
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Apollo spacesuit worn by astronaut Buzz Aldrin on Apollo 11 Orlan space suit worn by astronaut Michael Fincke outside the International Space Station Feitian space suit being displayed at the National Museum of China
A space suit (or spacesuit) is an environmental suit used for protection from the harsh environment of outer space. It mainly protects from outer space’s vacuum, as space suits are a highly specialized pressure suit, but it also protects against temperature extremes, as well as radiation and micrometeoroids. Basic space suits are worn as a safety precaution inside spacecrafts in case of loss of cabin pressure. For extravehicular activity (EVA), more complex space suits are worn, featuring a portable life support system.