Habitable Exoplanet Gliese 581d Might Exist After All; Could Harbor Life

March 10, 2015 4:56 PM

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The first exoplanet ever discovered in a habitable or "Goldilocks Zone" is again the prime candidate in the search for alien life.

Discovered in 2007, the exoplanet Gliese 581d was then described as a "super-Earth" with the potential to support liquid water and probably microbial life on its possibly rocky surface. The huge exoplanet located only 20 million light years from Earth had a mass some seven times that of the Earth.

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