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Ancient Earth, Alien Earths

earth habitability life exoplanets

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#1    Waspie_Dwarf

Waspie_Dwarf

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Posted 23 August 2014 - 10:13 PM


Ancient Earth, Alien Earths

During an August 20 event at NASA headquarters, called Ancient Earth, Alien Earths, a panel of scientists from NASA and other organizations discussed how vastly different and inhospitable we all would find ancient Earth, if we could go back in time. Despite the conditions, though, it was an environment in which life began and evolved and understanding how that was possible could help us recognize habitable planets around other stars.

Credit: NASA

Source: NASA - Multimedia

"Space is big. Really big. You just won't believe how vastly, hugely, mind-boggingly big it is. I mean, you may think it's a long way down the street to the chemist, but that's just peanuts to space." - The Hitch-Hikers Guide to the Galaxy - Douglas Adams 1952 - 2001

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