Actor: Seth Shostak

When Aliens Attack

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.

A Brief History of Time Travel

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.

Wow Signal

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.

The Real 'X-Files'?

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.

The Universe, UFO: The Real Deal

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.