Hubble: The Greatest Show in the Universe

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...

Travel into the world of aviation and explore the dreams of flight with the Smithsonian as they step into the unknown.

It contains 99.9 percent of all the matter in our solar system and sheds hot plasma at nearly a million miles an hour. The temperature at its core is...

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

William Shatner presents a light-hearted look at how the "Star Trek" TV series have influenced and inspired today's technologies, including: cell...

Can Homo sapiens evolve into Homo spatius? For over 50 years now, we have been testing our human nature in our effort to conquer outer space, and...

A real-time reconstruction of time-lapse photographs taken on board the International Space Station by NASA’s Earth Science & Remote Sensing...

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

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