The Russian Academy of Sciences said the meteor , estimated to be about 10 tons , entered the
Earth's atmosphere going at least 54,000 kph (33,000 mph).
It shattered about 30-50 kilometers (18-32 miles) above the ground, releasing several kilotons
of energy above the Ural Mountains.
The explosions broke an estimated 100,000 square meters (more than 1 million square feet) of
glass, city officials said.
Nearly 1,000 injured as meteor hits Russia