What’s Wrong with Our Sun?

Twelve men who belong to one of the world's most exclusive fraternities -- people who've walked on the surface of the moon -- are paid homage in this...

"The World's Most Powerful Telescopes" is a research expedition across the southern firmament. The science documentary shows the powerful telescopes...

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...

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

How can structures, which take up defined, rigid portions of space, make us feel transcendence? How can chapels turn into places of introspection?...

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

A series of programs designed for the adult layman who has a curiosity about the skies and the makeup of the universe in which we live. The terms...

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.

Archival material from the original NASA film footage – much of it seen for the first time – plus interviews with the surviving...