Scientists have found more than 50 tiny fragments of a meteor that exploded over Russia's Ural Mountains with the power of dozens of atomic bombs.

33,000 MPH Meteorite strikes in Russia's Ural region. Watch news and amateur videos.

A meteor streaked across the sky of Russia's Ural Mountains Feb. 15, 2013, causing explosions and injuring hundreds of people.

A 150-foot asteroid hurtled through Earth's backyard Friday, coming within an incredible 17,150 miles and making the closest known flyby for a rock of its

Experts say smaller strikes happen five to 10 times a year. Large impacts such as the one Friday in Russia are rarer but still occur about every five years,