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Year in Review: Meteorite makes an impact

Space rock fires a warning shot

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11:00am, December 27, 2013

This meteorite, weighing more than 570 kilograms, was recovered from a Russian lake in October.

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When a known asteroid passed within 28,000 kilometers of Earth on February 15, astronomers hoped it would serve as a wake-up call about the danger of meteorite impacts. As it turned out, astronomers got more than they had bargained for. On that same day, a 19-meter-wide space rock plowed through the atmosphere and exploded over southwestern Russia near Chelyabinsk, shattering windows and causing more than 1,600 injuries. The largest recorded meteor since 1908 spurred scientists and government officials to reevaluate impact risks and increase monitoring and preparation for future events.

In November, researchers led by planetary scientist Peter Brown of Canada’s University of Western

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