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This image shows a simulation of asteroid 2012 DA14 approaching from the south as it passes through the Earth-moon system on Feb. 15, 2013. The 150-foot object passed within 17,000 miles of the Earth. (Associated Press/NASA/JPL-Caltech)
Photo by: Uncredited
This image shows a simulation of asteroid 2012 DA14 approaching from the south as it passes through the Earth-moon system on Feb. 15, 2013. The 150-foot object passed within 17,000 miles of the Earth. (Associated Press/NASA/JPL-Caltech)

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Best combat rifles of all time

A combat rifle is a military service rifle that fires a full-power rifle cartridge, a mainstay of every modern army in the world. See the best combat rifles ever made.