A meteor's trail over the Ural Mountains' city of Chelyabinsk, about 930 miles east of Moscow, Russia, on February 15, 2013. The 13,000 ton meteor hit Earth's atmosphere at 42,000 mph and exploded, smashing windows and causing hundreds of minor injuries. (Photo by Yekaterina Pustynnikova/AP Photo/Chelyabinsk.ru)
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