Watch: WTF is going on with this object spinning in zero gravity?

If ever there was a symbol for what astronauts put themselves through in the name of science, it would be this crazy spinning T-handle. Up there in the zero-gravity environment of the International Space Station (ISS), everything happens according to a completely different set of rules, and the things you take for granted on Earth suddenly no longer apply. For example, in zero gravity, your sweat doesn't evaporate, there's a constant concern that your eyeballs might be going flat...
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