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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Nick Pope, a former U.K. Ministry of Defence and UFO expert who frequently appeared on the History Channel’s Ancient Aliens, has died after a battle with cancer. He was 60. The passing was announced ...

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 ...