How Do Spacesuits Work? A spacesuit is designed to keep astronauts safe in the vacuum of space, and its main secret is low pressure. Facebook Prev Article Next Article Space Checkout these cool gadgets... Related Posts NASA Tests Flying Saucer A rare, spectacular total eclipse of the sun Astronomers Track Birth Of A Giant 5 Space Mysteries We May Solve in Our Lifetime Ex-NASA Worker Claims She Saw Humans On Mars In 1979 Atoms As Big As Mountains — Neutron Stars Explained