Explore ancient mysteries and theories about alien involvement in ancient civilizations, from the Nazca lines to Puma Punku.

A new report details that the number of sightings of Unidentified Anomalous Phenomena is increasing as enthusiasts are searching for a chance to connect with the outrageous mysteries of the universe.

Mysterious shadows. Screams in the night. A hair-raising sense that something is watching. Stories of the unknown capture our imagination and curiosity in Destination America's new series MONSTERS AND ...

A father’s innocent photo of his daughter became one of the most debated alien mysteries in Britain. Jim Templeton said no one was standing behind the child when he took the picture, yet the developed ...