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 The End of Cassini’s Odyssey Is there a center of the universe? An Astronaut’s View of Earth with Col. Chris Hadfield How to Fix a Space Probe from a Billion Miles Away Should We Build a Dyson Sphere? NASA Tests Flying Saucer