The truth behind the U.S. government's secret Pentagon program on UAPs, Unidentified Aerial Phenomena, otherwise known as UFOs, is exposed.

The program was dedicated to collecting the testimonies of alleged witnesses of UFO phenomena and contrasted the facts with the opinion of experts such as astronomers, pilots and scientists in order to try to give a logical explanation to the event.

Scientists and sci-fi writers explore a hypothetical first-contact event between aliens and humans.

The search for other life in the Universe begins in our imagination as we travel to undiscovered planets out in deep space.

On a late summer evening in 1977, Ohio radio astronomers discovered a strong, interstellar signal that is believed by many to be the best evidence of communication from an extraterrestrial civilization.

What if an extra-terrestrial force attacked Earth? What might that look like and how will the people of Earth respond? Consulting a cast of world-renowned scientists, survival experts and defense experts, National Geographic explores this frightening scenario. Experts reveal what could motivate alien invaders to attack Earth, and speculate on how the attack might play out, the strategy alien invaders might use, and the most effective ways for humans to respond.

The enterprising alien who wants to visit Earth faces a number of daunting challenges. This program examines the advanced technologies he would need with an emphasis on concepts for interstellar travel humans are exploring.

VICE meets up with Joe Nickell, a longtime paranormal investigator who’s been called the real-life Scully. We travel with him to Roswell, NM on the anniversary of the 1947 UFO Crash to talk to believers, skeptics and UFO witnesses alike to see if the truth is really out there.

A journey through the evolution of time travel; from it origins, it's evolution and influence in science fiction, to the exciting possibilities in the future.

51 IFLY is a mockumentary that deals with the search for extraterrestrial life. A french documentary crew encounters an extraterrestrial being and decides to help him find a way home. It follows the crew investigating and interviewing various scientists and part speaks of the current state of the search for extraterrestrial life. It features interviews from members of the SETI ( Frank Drake, Jill Tarter, Seth Shostak,Franck Marchis, Bill Diamond,David Grinspoon) Richard Doty(Special Agent) , Preston Dennett (Ufologist) , Jean-François Clervoy (Astronaut), Michel Mayor (Astrophysicist) ,Claudio Maccone (Astronomer), Elinor Gates (Astronomer) .