What if an astronaut went on a space walk without wearing a space suit?
The current space suit that’s used for spacewalking from the shuttle and International Space Station is called the Extravehicular Mobility Unit or EMU. Because an Earth-like environment is created within the suit itself, a space suit allows you to walk around in space in relative safety. Space suits provide: • Pressurized atmosphere – The space suit provides air pressure to keep the fluids in your body in a liquid state — in other words, to prevent your bodily fluids from boiling. The pressure in the suit is much lower than normal air pressure on Earth (4.3 versus 14.7 PSI) so that the suit doesn’t balloon and so that it’s as flexible as possible. • Oxygen – Space suits must
