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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...

Fearful that the Russians would continue their lead in the space race and be the first to put a man on the moon, NASA felt an enormous pressure to...

After NASA picks up a trio of mysterious signals from within our own solar system, astronaut Roger Nelson is dispatched on a multi-year solo mission...

1969's Apollo 11 mission to the moon is highlighted in this tribute to the history of the United States' space program.

All of the necessary technologies required to reach the Moon was first tested during Project Gemini, which comprised of ten missions in the mid-1960s.

Discover the UFO phenomenon like never before, with insights from NASA, CNES, Oxford, compelling firsthand witnesses, and even the possible viewpoint...

The Space Shuttle returns to earth, but some of the equipment brought back on it begins to behave strangely. Scientists are unsure what is happening,...

When the space shuttle Challenger blew up in 1986, it was the most shocking event in the history of American spaceflight. The deaths of seven...

The first effort to send human beings to the Moon coincides during Christmastime on Earth.

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...

Roy Fleming is a small-town kiddie-ride operator who is deathly afraid of heights. After learning that his father has signed him up for the space...

Desperate to land a man on the moon before Russia does, NASA hastily preps a would-be spaceman for a mission that would leave him alone in a lunar...

A NASA spacecraft proves Einstein right when, traveling faster than light, it ends up near King Arthur's Camelot. On board are big-hearted Tom...

The Russian space station Avma is disintegrating, and an international team of scientists is sent to the dying station to salvage valuable technology...

An idea born in unsettled times becomes a feat of engineering excellence. The most complex machine ever built to bring humans to and from space and...

Andie Bergstrom, an astronaut eagerly awaiting her first trip to space, runs a summer camp for teenagers with her NASA-employed husband, Zach. One...

From the unique vantage point of 200 miles above Earth's surface, we see how natural forces - volcanoes, earthquakes and hurricanes - affect our...

NASA must devise a strategy to return Apollo 13 to Earth safely after the spacecraft undergoes massive internal damage putting the lives of the three...

Nichelle Nichols' daunting task to launch a national blitz for NASA, recruiting 8,000 of the nation's best and brightest, including the trailblazing...