"A meteor streaked across the sky and exploded over Russia's Ural Mountains with the power of an atomic bomb Friday, its sonic blasts shattering countless windows and injuring about 1,100 people."
In other news, an asteroid half the size of a football field is about to miss earth by 17,200 miles today. Is it time to get serious about hedging killer asteroid risk?
NBC's Cosmic Log:
"Even though the 150-foot-wide (45-meter-wide) asteroid is the biggest object of its kind to be seen coming this close to Earth, its orbit is so well-known that NASA's Near-Earth Object Program can rule out any chance of collision in the foreseeable future."
NASA's live stream of the asteroid
Streaming video by Ustream