ORBIT: A Journey Around Earth in Real Time

The captivating tales of the people and events behind one of humanity's greatest achievements in exploration: NASA's Voyager mission.

The Future of the Planet is at stake by biblical brophecy to spaceborn calamity.

Aspiring teenage astronauts reveal that a journey to Mars is closer than you think.

A documentary on Al Gore's campaign to make the issue of global warming a recognized problem worldwide.

In an age when misinformation, alternative facts, and conspiracy theories have become mainstream, UFOs have risen to become one of the most-talked...

For 18-year-old Finnish–Kosovan Fatu, a simple visit to the grocery store feels as nerve-racking as a lunar expedition: for the first time in...

Pilot JP Schulze and filmmaker Louis Cole set off to circumnavigate the world in a single-engine, 1974 Cessna T210L airplane named Balloo. They had...

On July 16, 1969, hundreds of thousands of spectators and an army of reporters gathered at Cape Kennedy to witness one of the great spectacles of the...

National Geographic's riveting effort recounts all 12 crewed missions using only archival footage, photos and audio.

Before the joint NASA/ESA Cassini-Huygens mission, humanity only knew what had been learned, decades earlier, with the previous limited, rapid...

Host John Larroquette takes viewers on a nostalgic trip through the 1965-1968 sci-fi comedy series. The disc's rare footage include Guy Williams's...

An epic journey around Mars — built from real satellite and rover data — revealing the red planet as you’ve never seen it before.