Friday, September 14, 2012

Skywatch: ASTEROID FLYBY

Today, an asteroid as wide as three football fields is flying past Earth. At closest approach, 2012 QG42 will be 2.8 million km (7.4 lunar distances) away, so there is no danger of a collision. Nevertheless, it is close enough for backyard astronomers to track using large amateur telescopes; the space rock is glowing like a 14th magnitude star. - Spaceweather.com

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