Video: Penny-Sized Thrusters Could Turn Tiny Satellites Into Orbiting Garbagemen

"The big rockets of our day get all of the fanfare during a launch, but often they're accompanied by tiny stowaways known as CubeSats, which hitch a ride and drop into orbit. They're convenient and able to get us into space cheaply, roughly the size of a Rubik's Cube and weigh only three pounds. A potential problem with them, though, is there's no way to control them once they're gone, and when we keep sending them farther from terra firma, they could pile up in space. To nip that problem in the bud early, an MIT professor has developed penny-sized thrusters that could help us take them down ourselves."