If you haven't followed him on Facebook and Twitter yet, do it.
Commander Chris Hadfield is becoming a social media legend with his pictures of the world from space and his engagement with audiences across the globe answering questions about the universe.
This week Hadfield, the chief at the International Space Station (ISS), demonstrated how one wrings out a wet cloth in space.
Apparently, one doesn't.
Water simply exits the cloth but hangs out around it like a gel that creeps up ones hands and arms.
The video of the demonstration is amazing. See below.