Doubt Cast On Existence Of Habitable Alien World

Moffett Field CA (SPX) Oct 14, 2010 ![][1] Last month, astronomers announced the discovery of the first potentially habitable extrasolar planet. But this week at an International Astronomical Union meeting, doubts were raised about the existence of this exciting new planet said to be orbiting the star Gliese 581. Called ‘Gliese 581 g,’ the planet was determined to be about 3 times the mass of Earth, meaning it was a rocky world, no



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