Ask an Astronomy Brain Parasite 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.
Credit:
NASA/JPL-Caltech.
Specifically, about why astronauts appear weightless in space.
Wil Wheaton co-stars.
Credit:
NASA/JPL-Caltech.
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