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.

In this episode of Ancient Aliens on the History Channel, the connection between Bigfoot and aliens is explored through ...

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 ...

The truth may be closer than you think. “The Proof Is Out There: Alien Edition” returns with brand-new episodes Thursday, Feb. 26 at 10 p.m. on History Channel, and this special edition is diving deep ...