Russian Meteorite Strike: The Day After

A massive clean-up effort is underway in Chelyabinsk, Russia after a meteor exploded above the city on Friday, shattering glass in more than 4,000 buildings.

The latest reports indicate that around 1,200 people were treated for injuries from the flying glass and debris, including more than 250 children. Several people remain hospitalized, although the vast majority of injuries are not thought to be serious.

Thousands of emergency response workers have been dispatched to the region. Local officials estimate the damage at over 1 billion rubles ($33 million US).

NASA has revised its estimate of the meteor's size to 55 feet in diameter, and its approximate weight to 10,000 tons. The space agency said the energy released in the meteor's explosion was more than 30 times the energy from the bomb that was dropped on Hiroshima in 1945.

Outside the city, authorities have sealed off a section of a frozen lake where a sizable chunk of the space rock reportedly crashed through the ice. Divers have found no trace of the meteorite in the lake so far.