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Finding Earth’s Twin In Space May Be Impossible (Synopsis)

31 Mar 2017, 14:00 UTC
Finding Earth’s Twin In Space May Be Impossible (Synopsis) NASA / JPL-Caltech / T. Pyle.
(200 words excerpt, click title or image to see full post)

When we think of the idea of “Earth’s twin,” we inevitably think of a planet like ours orbiting a star like ours at the same distance and speed. Most planets are not rocky and Earth-sized; most stars are not like the Sun; most planetary orbits don’t have Earth’s orbital parameters. Yet the idea that a twin of our planet is out there, and that’s the most likely place to look for life, persists.

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