'Rare Earth' Revisited: Anomalously Large Moon Remains Key To Our Existence

April 22, 2013 11:23 AM

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'Rare Earth' Revisited: Anomalously Large Moon Remains Key To Our Existence

Science fiction has continually given us the notion that once our starships start surfing the Milky Way’s grand spiral arms, we’ll soon find ourselves on some sort of galactic A-list.

But what if no one’s there to host an interstellar meet and greet? What if we’re very rare, if not truly alone as far our telescopes can see?

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