Sunday, Dec 30, 2012 3:00 PM UTC
There may be no “earth-like” planets out there
Scientists love to theorize about habitable worlds. But it's premature to think they'd look anything like our own
Aliens
Monday, Dec 10, 2012 11:07 PM UTC
5 signs the UFO community can’t take a joke
Russian Prime Minister Dmitri Medvedev makes a crack about aliens, and conspiracists promptly lose their minds
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