The World's Most Powerful Telescopes

In a studio setting, Stephen Hawking, Arthur C. Clarke and Carl Sagan (who joins them via satellite) discuss the Big Bang theory, God, our existence...

Documentary following researchers as they try to take the first-ever picture of a black hole. They must travel the globe to build a revolutionary...

What’s it like to dedicate your life to work that won’t be completed in your lifetime? Fifteen years ago, filmmaker David Licata focused...

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

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

Travel alongside the astronauts as they deploy and repair the Hubble Space Telescope, soar above Venus and Mars, and find proof of new planets and...

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...

Some 220 miles above Earth lies the International Space Station, a one-of-a-kind outer space laboratory that 16 nations came together to build. Get a...

Join the Mars rovers Spirit and Opportunity for an awe-inspiring journey to the surface of the mysterious red planet.

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...

Top Gear presenter James May presents this informative program that examines the historic moon missions. Traveling to America, May meets three of the...

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