8 of 8: In this photo taken with a mobile phone camera, a meteorite contrail is seen in Chelyabinsk region on Friday, Feb. 15, 2013. A meteor streaked across the sky of Russia?s Ural Mountains on Friday morning, causing sharp explosions and reportedly injuring around 100 people, including many hurt by broken glass. (AP Photo/Sergey Hametov) (AP Photo/ Sergey Hametov)

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