Earth-Like Planet Gliese 581 C

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Gliese 581 C is the only other planet in the habitable zone, that we know of. This planet is one to watch. I think the more we find out about this planet the more exciting it it will be. Full Story

Here is a real photo of the star Gliese 581 located 20.5 light years away in the constellation Libra. Credit: Digital Sky Survey.