Astronaut Plays Zero-G Ping-Pong With a Ball of Water (Video)

Liquid is a challenging thing to manage in space, as space station astronauts experienced during a spacewalk earlier this month. A small amount of water leaking into in NASA astronaut Tim Kopra's suit forced the crew to cut the spacewalk short as a precaution, although Kopra was never in any immediate danger, NASA officials said. The cause of that leak is being investigated.