

Revisit the most compelling mysteries explored over the past 15 years of "Ancient Aliens." Experts like Giorgio Tsoukalos, David Childress, William Henry, and Jason Martell engage in conversations around Ancient Astronaut Theory in each episode.

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 to continued mass sightings in the US, each episode gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate.

Investigates a wide range of historically compelling topics and the mysteries surrounding each including the Titanic, D.B. Cooper, Roswell, John Wilkes Booth, and more. Fresh, new evidence and perspectives will be showcased, such as never-before-released documents, personal diaries and DNA evidence.

The series heads to the very frontiers of space and science to produce the definitive television history of science fiction, told through its impact on cinema, television and literature, with the help of filmmakers, writers, actors, and graphic artists. Each episode will explore one of the enduring themes of science fiction: time travel; the exploration of space; robots and artificial intelligence; and aliens.

In Search of... is a TV series that was broadcast weekly from 1977 to 1982, devoted to mysterious phenomena. It was created after the success of three one-hour TV documentaries produced by creator Alan Landsburg: In Search of Ancient Astronauts in 1973, In Search of Ancient Mysteries and The Outer Space Connection, both in 1975. All three featured narration by Rod Serling, who was the initial choice to host the spin-off show. After Serling's death, Leonard Nimoy was selected to be the host.

Maritime mysteries—old and new—come to life in this series, combining scientific data and digital re-creations to reveal shipwrecks, treasures, and sunken cities on the bottom of lakes, seas and oceans around the world.

A motley crew of young rebellious aliens commandeer an old Starfleet ship and must figure out how to work together while navigating a greater galaxy, in search for a better future. These six young outcasts know nothing about the ship they have commandeered, but over the course of their adventures together, they will each be introduced to Starfleet and the ideals it represents.

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

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

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

TV's most-watched history series brings to life the compelling stories from our past that inform our understanding of the world today.

Doctor Who Confidential is a documentary to complement the revival of the long-running British science fiction television series Doctor Who. Each episode was broadcast on BBC Three on Saturdays, immediately after the broadcast of the weekly television episode on BBC One. The running time of the first two series was 30 minutes, being extended to 45 minutes in the third. BBC Three also broadcast a cut-down edition of the programme, lasting 15 minutes, shown after the repeats on Sundays and Fridays and after the weekday evening repeats of earlier seasons.

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

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

Voyage across the solar system with Professor Brian Cox and explore the new discoveries, natural wonders and strange mysteries on the diverse worlds that orbit the sun.

Explore the surprising things we know (and don’t know) about why people are the way they are through expert interviews, rare footage from historical experiments, and brand-new, ground-breaking demonstrations of human nature at work.

Award-winning actor and nervous explorer Eugene Levy steps out of his comfort zone for a whirlwind tour of the world's most beautiful and intriguing destinations.

This documentary series, made in partnership with Vox, explain some of the world's current trends, from politics, to science to pop culture.

The history of the sport of baseball in America, told through archival photos, film footage, and the words of those who contributed to the game in each era. Writers, historians, players, baseball personnel, and fans review key events and the significance of the game in America's history.

Based on the recurring TripTank sketches, Jeff And Some Aliens follows Jeff, the world’s most average guy, and the three aliens sent to study him to determine whether or not humanity should be destroyed. Jeff’s mundane life is constantly thrown into chaos by his extraterrestrial guests – it isn’t always easy having roommates who force you to participate in grueling intergalatic decathalons or perform Azurian honor killings to restore interstellar balance

Turning points in ancient Roman history and some of the Empire's greatest stories are brought to life in this drama documentary series.