The term UFO often makes people think of alien spacecraft, but that is not what the label actually means. Today, U.S. agencies usually use the term UAP, short for unidentified anomalous phenomena, to ...
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Shocking Aztec codices unearthed | Ancient Aliens
Researchers find mysterious aztec codices in Mexico City. See more in this clip from Season 21, Episode 7, "Mysteries of the Aztecs." ...
Happy birthday to the queen of sci-fi movies! From Alien to Avatar, one actress has become the face of modern science fiction.
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