NASA astronaut Scott Kelly, who marked day 300 of a historic year in space on Jan.
21, 2016, shows off another fascinating feature of life in microgravity.
Kelly used two paddles with hydrophobic, or water repellant, features to pass a sphere of water back and forth.
Scientists use the microgravity environment of the space station to advance scientific knowledge in Earth, space, physical, and biological sciences that otherwise wouldn't be possible down here on the planet.
