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“Ancient Aliens” investigates the highly contested theory that extraterrestrials may even predate humans on Earth, arriving long before any UFO encounters of the modern era. Per History, “From the age ...

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.

As the long-running HISTORY Channel series “Ancient Aliens” begins its live tour, we get a preview from series favorite Giorgio Tsoukalos, a leading expert on Ancient Astronaut Theory, which contends ...