581

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Gliese 581 c is the first discovered terrestrial exosolar planet in the habitable zone surrounding its star (where surface temperatures might be similar to Earth). Note that 581 is an emirpimes (581 = 7 * 83 and 185 = 5 * 37). [Post]

Submitted: 2007-09-16 18:21:23; Last Modified: 2008-01-30 17:28:00.