Massive Asteroid Zooms Past Earth with a Surprise Moon

January 27, 2015 7:04 PM

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NASA/JPL-Caltech(NEW YORK) — The first images showing an asteroid whizzing past Earth on Monday reveal the mountain-sized mass brought with it a surprise moon.

Asteroid 2004 BL86 made its closest approach to Earth on Monday morning, coming within 745,000 miles -- about 3.1 times the distance between the Earth and the moon.

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