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"       Bright flashes of light and trails of smoke thought to be meteor fragments slashed through Russian skies early Friday morning. The event, which occured around 9:20 a.m. local time in the Ural mountain city of Chelyabinsk, resulted in a explosion damaging property and injuring hundreds. According to the New York Times emergency officials report no fatalities, but city officials say more than 750 people sought medical care at local hospitals and 31 required hospitilization. According to Russian experts, the event was caused by a 10-ton meteor known as a bolide\u2014thought to be mostly made of iron\u2014which entered the Earth&amp;#039;s atmosphere at an estimated speed of over 33,000 mph. It then fragmented somewhere between three and nine miles above the Earth&amp;#039;s surface, creating a sonic boom, the Russian Academy of Sciences (RAS) said in a statement. The RAS estimates that the resulting explosion was on the order of a &amp;quot;few kilotons.&amp;quot; By comparison, the atomic bombs dropped on Hiroshima and Nagasaki registered 16 and 21 kt, respectively. While scientists believe that a large majority of the meteor burned up in the atmosphere, there is a strong posibility that smaller meteorite fragments struck the Earth\u2014no more than 1 to 5 percent of the intial metor&amp;#039;s mass.  According to the RAS&amp;#039;s statement, meteors regularly enter the Earth&amp;#039;s atmoshere, but usually burn up at high altitudes, between 18 to 30 miles into the sky. The last time a low-falling metor was observed in Russia was in 2002, known as the Vitim event. It&amp;#039;s also been sugguested that the mysterious 1908 Tunguska event was also caused by a meteorite impact. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/space/a8732/meteorite-fragments-strike-russia-15104400/>