SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Chebarkul meteorite fragments research. Fragments of the Chebarkul meteorite being examined in a laboratory at the nanomaterials and nanotechnologies centre at the Ural Federal University. The meteoroid and meteor (Chelyabinsk Event) that produced these meteorite fragments occurred at around 09:20 local time (03:20 UTC) on 15 February 2013 over Russia's Chelyabinsk region. The meteoroid weighed several thousand tons, reaching an altitude of around 20 kilometres before exploding in an airblast. Most fragments found so far are less than a few centimetres across. Photographed on 25 February 2013.
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