Last night a large meteor exploded in the sky over the Western Russian city of Chelyabinsk. The event was captured by people with cell phones and dashboard cams:

The like something out of War of the Worlds, there's a big streak across the sky, a bright light and then:

A sonic boom, car alarms and a lot of broken glass.

Here to talk about the event is Bruce Betts, director of projects at the planetary society here in Pasadena.