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A Shadowed Past

Understanding of moon’s earliest days gets even murkier

By
10:22am, October 7, 2011

Suspended in the sky, the moon has stared unblinking at the Earth for billions of years. But new work suggests the placid sphere’s two faces may belie a violent childhood — one that involved the death of a small celestial companion. The moon may also be lying about when it was born, by millions of years.

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