Kepler-21b: Near Earth-sized planet discovered 352 light-years away.
huffingtonpost.com/2011/11/30/kepler-21b-new-...
huffingtonpost.comPosted Dec 2, 2011, 12:27 AM UTC
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huffingtonpost.comhuffingtonpost.comPosted Dec 2, 2011, 12:27 AM UTC