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Harvard-Smithsonian Center for Astrophysics

CfA: First Earth-Sized Planets Found

20 Dec 2011, 18:14 UTC
CfA: First Earth-Sized Planets Found

December 20, 2011: Astronomers using NASA's Kepler mission have detected two Earth-sized planets orbiting a distant star. This discovery marks a milestone in the hunt for alien worlds, since it brings scientists one step closer to their ultimate goal of finding a twin Earth.

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