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Chelyabinsk Meteors
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Russia asteroid impact ESA update and assessment

The first firm details of the 15 February asteroid impact in Russia, the largest in more than a century, are becoming clear. ESA is carefully assessing the information as crucial input for developing the Agencys asteroid-hunting effort.
At 03:20 GMT on 15 February, a natural object entered the atmosphere and disintegrated in the skies over Chelyabinsk, Russia.
Extensive video records indicate a northeast to southwest path at a shallow angle of 30° above the horizontal. The entry speed is estimated at around 18 km/s - more than 64 000 km/h.
 
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 Ed ~ The total kinetic energy is simply ½mv² (ie mass = ~10000 tonnes, Velocity = ~18km/sec)



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Scientists Seek More Information On Meteorite

Authorities in Russia are still trying to figure out what happened to the meteorite that came crashing to earth on Friday.
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Meteorite rush seizes Russia

Scores of online bargain deals have spawned all over the Internet following the Friday meteorite crash in central Russias Chelyabinsk, with many opportunities grabbing at the change of making easy profits from auctioning off what they claim to be fragments of the genuine meteor.
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Meteorite fragments found in Russia's Urals region

Fragments from a meteorite have been found in Russia's Urals region where it struck on Friday, injuring some 1,200 people, Russian scientists say.
The fragments were detected around a frozen lake near Chebarkul, a town in the Chelyabinsk region, where the meteorite is believed to have landed.
Viktor Grohovsky, of the Urals Federal University, told Russian media that the material contained about 10% iron.
 
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Meteorite Fragments Found in Icy Urals Lake - Scientists

The fragments of a meteorite that hit Russias Urals on Friday, injuring more than 1,000 people in the area, have been found by scientists in Lake Chebarkul, in the Chelyabinsk Region.
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RE: Chelyabinsk Meteors
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Satellite sees Russian meteor explosion from space

Spoiler



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Divers Search Frozen Russian Lake For Meteorite Fragments

Divers scoured the bottom of a Russian lake on Saturday for fragments of a meteorite that plunged to Earth in a blinding fireball whose shockwaves injured 1,200 people and damaged thousands of homes.
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 The biggest impact reportedly left a crater measuring around six meters across on the edge of a frozen lake, 80 kilometres west of Chelyabinsk city. Drivers spent three hours scouring the bottom of Lake Chebarkul looking for fragments which were believed to have plunged into the waters, but were unsuccessful. 
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NASA has revised their size and energy estimates for the Russia meteor upon review of further data. Scientists now believe the small asteroid was about 17 meters, or 55 feet, in diameter and had a mass of 10,000 tons. The revised estimate of energy unleashed by the meteor is about 500 kilotons, more than 30 times the blast yield of the atomic bomb dropped on Hiroshima. 
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Russian meteor exploded with force of 30 Hiroshima bombs

The 55 foot wide rock, said by Nasa to have a mass of 10,000 tonnes, lit up the sky above the Urals region on Friday morning, causing shockwaves that injured 1,200 people and damaged thousands of homes in an event unprecedented in modern times.
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