A bowling ball and a feather walk into a vacuum chamber...

"Physicist Brian Cox of the BBC Two program Human Universe recently visited the world’s largest vacuum chamber at NASA’s Space Power Facility outside of Sandusky, Ohio, to demonstrate the effects of air on falling objects. In the video, a feather and bowling ball are dropped at the same time in normal Earth conditions and after the air has been removed from the room.

"Source: http://laughingsquid.com/a-feather-and-a-bowling-ball-dropped-together-…