Gus Grissom

At the height of the space race, three U.S. astronauts are tapped as the first Apollo crew. With dazzling archival footage and exceptional access, this riveting documentary explores the tragic events that followed, shaking NASA to the core.

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Recently discovered footage reveals the secret history of NASA's first landing on the moon, and using this brand-new evidence, former astronauts and experts challenge everything known about the Apollo missions.

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

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In the 1950s and early '60s, a small band of high-altitude pioneers exposed themselves to the extreme forces of the space age long before NASA's acclaimed Mercury 7 would make headlines. Though largely forgotten today, balloonists were the first to venture into the frozen near-vacuum on the edge of our world, exploring the very limits of human physiology and human ingenuity in this lethal realm.

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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.

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TV's most-watched history series brings to life the compelling stories from our past that inform our understanding of the world today.

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