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Asteroid whizzes past Earth

This NASA graphic depicts the Earth flyby by the 45-meter wide asteroid -- dubbed 2012 DA 14. NASA is keeping close tabs on the sizable asteroid, which is set to whiz past our planet Friday in what the US space agency says is the closest flyby ever predicA closely tracked asteroid, about 150-feet (45-meters) wide, whizzed safely past Earth on Friday, the same day a much smaller, previously undetected meteor hit Russia, injuring nearly 1,000 people.