NASA's Unexplained Files - Season 6 Episode 4 Pluto's Evil Twin

A police chief takes in a young child she finds near the site of a mysterious accident who has no memory of what has happened. The investigation...

Ten years ago, a mysterious spatial anomaly now known as "Heaven's Gate" appeared in South America, shortly followed by the opening of "Hell's Gate"...

Have you ever wondered what goes on behind the scenes of the most legendary monuments and powerful organizations in the United States?...

A users' guide to the cosmos, from the Big Bang to galaxies, stars, planets and moons: where did it all come from and how does it all fit together? A...

A man who digs into his mother's mysterious death meeting humans with the same faces as him one by one and becoming embroiled in a bigger conspiracy.

From training to launch to landing, this all-access docuseries rides along with the Inspiration4 crew on the first all-civilian orbital space mission.

Brought together by a midnight phone call, an FBI agent and a cybersecurity expert must unravel an ever-growing web of political conspiracies.

During a perilous 24-hour mission on the moon, space explorers try to retrieve samples from an abandoned research facility steeped in classified...

Thailand is not just a vacation destination, it is a wealth of culture and beauty. From the dramatic mountains of the North to the very tip of the...

Delve deep into a vast archive of over 70,000 UFO files gathered over nearly half a century in Hangar 1. MUFON, an independent organization dedicated...

Ben Hansen is on a mission to uncover the truth behind UFO sightings across America. With unprecedented access to the archives of famed ufologist Dr....

Investigates the mysteries behind declassified top secret government files with stunning details about the world's most credible UFO sightings and...

Satellites orbit Earth at 17,000 miles an hour, capturing images of our world that are breathtaking, but some are bizarre. This unique perspective...

Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings...

From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected...

A modern update finds the famous sleuth and his doctor partner solving crime in 21st century London.

Seven noble families fight for control of the mythical land of Westeros. Friction between the houses leads to full-scale war. All while a very...

Hundreds of cash-strapped players accept a strange invitation to compete in children's games. Inside, a tempting prize awaits — with deadly...

When a young boy vanishes, a small town uncovers a mystery involving secret experiments, terrifying supernatural forces, and one strange little girl.