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 This Reaction Could Let Us Live on Mars NASA Reveals Astronauts Heard Unexplained Music At The Moon Laniakea: Our home supercluster Building Blocks Of Life Spotted In Alien System Astronomers Track Birth Of A Giant Space Balloon Will Take You Up There for $75 000