Ancient Astronaut Theory has existed in popular culture for nearly 50 years, asking the question whether extraterrestrials visited Earth in the remote past. Find out more in Season 1, Episode 10, "The Alien Code." #InSearchOfAliens Subscribe for more HISTORY: ...

A mysterious rock bearing a cryptic design was discovered in Roswell, New Mexico in 2004. Now coined "The Roswell Rock," this piece of stone is unusually smooth and possesses unique magnetic properties, in Season 1, Episode 4, "The Roswell Rock." #InSearchOfAliens Subscribe for more HISTORY: ...

The mysterious Mediterranean island of Malta lies south of Sicily and is home to megalithic structures built by a mysterious prehistoric society. See more in Season 1, Episode 6, "The Mystery of the Cyclops." #InSearchOfAliens Subscribe for more HISTORY: http://histv.co/SubscribeHistoryYT ...

The ancient ruins of Puma Punku have mystified archaeologists ever since their discovery. The massive stones are carved into blocks that are unlike anything found anywhere else, in Season 1, Episode 4, The Mystery of the Puma Punku." #InSearchOfAliens Subscribe for more HISTORY: ...