Chebarkul meteorite fragments research. Fragments of the Chebarkul meteorite 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. The largest fragments found so far are about 10 centimetres across. Photographed on 25 February 2013.
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