Three astronauts on board the International Space Station had a bit of a scare when space debris whizzed by the space station at 21,000 miles per hour. The crew took refuge in the Soyuz capsule, an attached Russian spacecraft. This incident happened a month after two satellites collided in space.

To talk about the space junk orbiting the earth is Ben Baseley-Walker, a legal and policy consultant at the Secure World Foundation.