Stories of strange encounters accompany many of history's major events. Is it merely coincidence? Or might it be evidence of...

Ancient Astronaut Theorists investigate Nomali statues and their connection to sky stones, in this clip from Season 18, "Ancient Aliens...

Ancient Astronaut Theorists explore the volcanic lava tubes in Pluto’s Cave, in this clip from Season 18, "Ancient Aliens On Location:...

Ancient Astronaut Theorists believe a massive pyramid located in Teotihuacan, Mexico could commemorate the arrival of extraterrestrials,...

All around the world there are examples of physical evidence that suggest humans are not alone in the universe. But has this evidence...

Ancient Astronaut Theorists investigate a possible connection between Atlantis and Native American origin stories, in this clip from...

It is believed that the Knights Templar uncovered the Ark of the Covenant during an important excavation, in this clip from Season 8,...

A theoretical physicist at the University of Connecticut shares his prototype for a large time machine that extraterrestrials could’ve...

Ancient Astronaut Theorists believe that Prince William might've investigated and researched a classified UFO phenomenon, in this clip...

Former police detective Dave Paulides investigates a mysterious disappearance at Mount Shasta, in this clip from Season 17, "The Mystery...

Ancient Astronaut Theorists believe that the Rudston Monolith possesses unusual powers that spark strange phenomenon, in this clip from...

The ancient ruins of Puma Punku have mystified archaeologists ever since their discovery. The massive stones are carved into blocks that...

A four-part docu-series from J.J. Abrams’ Bad Robot and Glen Zipper exploring our fascination with unidentified flying objects, and what...

Everyone's heard of Area 51. However, there's an underwater facility that's also highly secretive. Perched on the cusp of The Bermuda...

The notion of a universe inhabited by aliens can be found just about everywhere in American popular culture. But could mankind really...

Documented eyewitness accounts of strange UFO activity at the Solomon Islands has led to a theory that an underwater alien base is...