To Mars by A-Bomb: The Secret History of Project Orion

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

Hiroshima and Nagasaki: 75 Years Later is told entirely from the first-person perspective of leaders, physicists, soldiers and survivors.

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

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.

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

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...

The Moment in Time documents the uncertain days of the beginning of World War II when it was feared the Nazis were developing the atomic bomb. The...

What if you could get behind the wheel and race through space? We scale down the Solar System to the continental United States and place the planets...

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...

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...