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.

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

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...

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.

The 1960s was an extraordinary time for the United States. Unburdened by post-war reparations, Americans were preoccupied with other developments...

This documentary explores famous figure J. Robert Oppenheimer, an American theoretical physicist who was called, "father of the atomic bomb" for his...

In the year 1957 the cold war expands to space. The Soviet-Union sends Sputnik as the first manmade object into earth-orbit. 3 years later Yuri...

A team of international scientists attempt to document the first-ever image of a black hole.

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

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...

A disturbing collection of 1940s and 1950s United States government-issued propaganda films designed to reassure Americans that the atomic bomb was...