The Moon: Earth's Little Helper | Video

Tuesday, October 9, 2012 - 13:01 in Astronomy & Space

The Moon likely formed 4.5 Billion years ago as a Mars-sized body smashed into Earth (so compositions are similar). Lunar tidal forces encouraged life to flourish in the oceans. The Moon absorbed many asteroid impacts that threatened Earth's life.

Read the whole article on Space.com

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