"Ancient Aliens" is the show that just won't quit but then, with 75 million years to investigate for signs of alien visitation to Earth, why would it. Presented (and exec produced) by the ...
Theorists believe that thousands of years ago, extraterrestrials landed on Earth in the season 20 premiere of History Channel’s hit series “Ancient Aliens” set to air Thursday, January 15 at 9 p.m.
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