Alexander Babin, rescuer of Chelyabinsk Airlines injured by glass window broken by a shock wave from a meteor explosion rests after getting a medical care in Chelyabinsk Regional Hospital in Chelyabinsk, about 1500 kilometers (930 miles) east of Moscow, Saturday, Feb. 16, 2013. A meteor that scientists estimate weighed 10 tons (11 tons) streaked at supersonic speed over Russia's Ural Mountains on Friday, setting off blasts that injured some 500 people and frightened countless more. (AP Photo/Boris Kaulin)

CLARIFIES CAPTION - Alexander Babin, a rescuer employed by Chelyabinsk Airlines, who was injured by glass from window at his home broken by a shock wave from a meteor explosion, rests after getting medical care in Chelyabinsk Regional Hospital in Chelyabinsk, about 1500 kilometers (930 miles) east of Moscow, Saturday, Feb. 16, 2013. A meteor that scientists estimate weighed 10 tons (11 tons) streaked at supersonic speed over Russia's Ural Mountains on Friday, setting off blasts that injured some 500 people and frightened countless more. (AP Photo/Boris Kaulin)

CLARIFIES CAPTION - Alexander Babin, a rescuer employed by Chelyabinsk Airlines, who was injured by glass from window at his home broken by a shock wave from a meteor explosion, rests after getting medical care in Chelyabinsk Regional Hospital in Chelyabinsk, about 1500 kilometers (930 miles) east of Moscow, Saturday, Feb. 16, 2013. A meteor that scientists estimate weighed 10 tons (11 tons) streaked at supersonic speed over Russia's Ural Mountains on Friday, setting off blasts that injured some 500 people and frightened countless more. (AP Photo/Boris Kaulin)

In this photo provided by Chelyabinsk.ru a woman cleans away glass debris from a window after a meteorite explosion over Chelyabinsk region on Friday, Feb. 15, 2013. A meteor exploded in the sky above Russia on Friday, causing a shockwave that blew out windows injuring hundreds of people and sending fragments falling to the ground in the Ural Mountains. The Russian Academy of Sciences said in a statement hours after the Friday morning fall that the meteor entered the Earth's atmosphere at a speed of at least 54,000 kph (33,000 mph) and shattered about 30-50 kilometers (18-32 miles) above ground. The fall caused explosions that broke glass over a wide area. (AP Photo/ Yevgenia Yemelyanova, Chelyabinsk.ru)

A local resident repairs a window broken by a shock wave from a meteor explosion in Chelyabinsk, about 1500 kilometers (930 miles) east of Moscow, Friday, Feb. 15, 2013. A meteor that scientists estimate weighed 10 tons (11 tons) streaked at supersonic speed over Russia's Ural Mountains on Friday, setting off blasts that injured some 500 people and frightened countless more. (AP Photo/Boris Kaulin)

The building of the city;s city sports arena is damaged in after a meteorite fell near Chelyabinsk, about 1500 kilometers (930 miles) east of Moscow, Russia, Saturday, Feb. 16, 2013. With a blinding flash and a booming shock wave, a meteor blazed across the western Siberian sky Friday and exploded with the force of 20 atomic bombs, injuring more than 1,000 people as it blasted out windows and spread panic in a city of 1 million. (AP Photo/Laura Mills)

Cars driver psst a zinc factory building with part of its roof collapsed in Chelyabinsk, about 1500 kilometers (930 miles) east of Moscow, Russia, Saturday, Feb. 16, 2013. With a blinding flash and a booming shock wave, a meteor blazed across the western Siberian sky Friday and exploded with the force of 20 atomic bombs, injuring more than 1,000 people as it blasted out windows and spread panic in a city of 1 million. (AP Photo/Laura Mills)

In this frame grab made from dashboard camera video, a meteor streaks through the sky over Chelyabinsk, about 1500 kilometers (930 miles) east of Moscow, Friday, Feb. 15, 2013. With a blinding flash and a booming shock wave, the meteor blazed across the western Siberian sky Friday and exploded with the force of 20 atomic bombs, injuring more than 1,000 people as it blasted out windows and spread panic in a city of 1 million. (AP Photo/AP Video)