Mass UFO sightings from the last 50 years fuel a mystery in this documentary series featuring eyewitness accounts, expert interviews and new evidence.

Are we finally a step closer to understanding the great unknown and what it may – or may not – hold? Man has always been curious about...

Dive into the mysteries of some of NASA’s most curious missions and explore stories of engineering achievement and human endurance. Each...

Antiques Roadshow is a British television show in which antiques appraisers travel to various regions of the United Kingdom to appraise antiques...

Tony Harris travels to the Florida coast to explore the notorious and fear evoking Bermuda Triangle.

Over the past four and a half decades, the so-called D.B. Cooper skyjacking case has captivated countless armchair detectives - not to mention teams...

Experts review prophecies about the Mayan calender and the significance of December 21, 2012.

From the lost city of Atlantis to the Loch Ness Monster to the mystery of the Nazca Lines, the world is filled with tales of mysterious locations,...

Featuring interviews with his followers, critics and Raël himself, this docuseries traces how a UFO-inspired religion spiraled into a...

Though claims of extraterrestrial encounters have long been dismissed, many believe the existence of UFOs is not just likely, but a certainty.

Don Wildman unearths relics from the world's greatest institutions to reveal secrets from the past. He examines each artifact to illuminate history's...

Though claims of extraterrestrial encounters have long been dismissed, many believe the existence of UFOs is not just likely, but a certainty.

Honoring service members whose courage merited the awarding of a Medal of Honor, this docudrama series re-creates their inspiring true stories.

An extraterrestrial alien arrives on Earth at a turning point in human evolution and must confront his own past to determine our future.

The adventures of a larger-than-life red dog on Bridwell Island.

Real people sit down with friends and family to share terrifying true stories from their past, re-created through chilling re-enactments.

This immersive series follows the world's most magnificent creatures, capturing never-before-seen moments from the heartwarming to the outrageous.

Framed for murder and on the run, a former thief struggles to expose the vanguard of an alien invasion with the help of a conspiracy theorist and...

Infographics and archival footage deliver bite-size history lessons on scientific breakthroughs, social movements and world-changing discoveries.

A series of standalone documentaries powered by the unparalleled journalism and insight of The New York Times, bringing viewers close to the...

Mass UFO sightings from the last 50 years fuel a mystery in this documentary series featuring eyewitness accounts, expert interviews and new evidence.

Meet five lively animal friends who love to sing, dance and use their imaginations to embark on outrageous adventures to magical places.

Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.