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Back-to-back asteroids harmlessly fly past Earth
A newly discovered small asteroid has harmlessly zipped close to Earth — just as scientists expected.The 16-foot-long space rock, discovered on Memorial Day, passed by early Tuesday at a distance of 8,950 miles from the Earth's surface.NASA's Jet Propulsion Laboratory, which tracks such flybys, said the asteroid — dubbed 2012 KT42 — was the sixth closest asteroid approach.It was
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