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Videos / Astronomy / Where Are The Alien Civilizations?







Where Are The Alien Civilizations?
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Where Are The Alien Civilizations?
Exploring the Fermi Paradox; the apparent contradiction between the high probability of alien civilizations and the lack of evidence for them.

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Rating: 2.8 / 5 (944 votes)
Posted by grim on August 9, 2011
Hits: 4599

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