The Personal Satellite Assistant (PSA) is a robotic assistant for astronauts working in space. The PSA is about the size of a softball and has sensors for measuring gases, temperature, and air pressure.

The PSA is an astronaut support device designed to move and operate independently in the microgravity environment of space-based vehicles. The PSA will assist astronauts who are living and working aboard the Space Shuttle, Space Station, and during future space exploration missions to the Moon and Mars.



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