Astronaut Scott Kelly marked the 300th day of his year-long stay on the International Space Station with a solo game of space ping pong.
With the aid of gravity loss and two paddles in each hand, Kelly bounced a sphere of water up and down. Kelly used hydrophobic paddles -- wrapped in teflon -- that repel water.
This interesting phenomenon was filmed in ultra-high definition or 4K, with four times the pixels as a normal 1080p video. So if you've got a 4K TV, you're in for a treat — everyone else will have to make do with ordinary full HD.
