
Ancient Aliens
Strange ancient objects could suggest that an extraterrestrial civilization once existed on Earth.

Strange ancient objects could suggest that an extraterrestrial civilization once existed on Earth.

Examining a recently discovered lost city in Peru that has upended the timeline of South America.

Humankind's most profound achievement; what humans might learn by venturing out farther into space.

Archaeologists discover that many ancient sites were constructed with an acoustic purpose.

Experts in the 21st century look for undeniable proof of extraterrestrial visitation.

Top 10 alien cover-ups, from the famous Roswell Incident to recently released UFO videos.

An exploration of the top 10 mysterious sites on the planet that could prove alien visitation.

Strange ancient objects could suggest that an extraterrestrial civilization once existed on Earth.

In 1587, a group of settlers land off the coast of North Carolina on Roanoke Island.

As evidence continues to mount, the mystery endures as to whether the Loch Ness monster exists.

New evidence and technology may be able to crack the code and discover who the Zodiac Killer is.

In 1997, thousands of people in Phoenix witnessed strange lights; this could be an UFO sighting.

In 1963, JFK is assassinated; a suspect is captured, but many believe there's more to the story.

A series of unexplained deaths near Chicago in 1982 starts a nationwide panic.

An unassuming family home on Long Island becomes the most notorious house in America.

In 1587, a group of settlers land off the coast of North Carolina on Roanoke Island.

As evidence continues to mount, the mystery endures as to whether the Loch Ness monster exists.

New evidence and technology may be able to crack the code and discover who the Zodiac Killer is.

In 1997, thousands of people in Phoenix witnessed strange lights; this could be an UFO sighting.

In 1963, JFK is assassinated; a suspect is captured, but many believe there's more to the story.