[![This photo, a still taken from a NASA telescope video, shows Asteroid 2010 TD54 as it passes Earth on Oct. 12, 2010. It made its closest approach to Earth at 6:51 a.m. EDT (3:51 a.m. PDT).]]A small asteroid passed close by Earth Tuesday, flying within the orbit of the moon while astronomers watched to see if the encounter caused any quakes on the space rock.
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