Ask an Astronomy Brain Parasite: Why are astronauts weightless in space‪?‬ IRrelevant Astronomy

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Deep inside an astronomer's head, a parasite (voiced by Alan Tudyk) taps into his brain to learn about...science! Specifically, about why astronauts appear weightless in space. Wil Wheaton co-stars.

  • © 2010 NASA. Commercial use prohibited. All other users must give proper credit.

Deep inside an astronomer's head, a parasite (voiced by Alan Tudyk) taps into his brain to learn about...science! Specifically, about why astronauts appear weightless in space. Wil Wheaton co-stars.

  • © 2010 NASA. Commercial use prohibited. All other users must give proper credit.