When We Left Earth: The Nasa Missions May 2026

is a six-part documentary miniseries that originally aired on the Discovery Channel in 2008 to commemorate NASA's 50th anniversary. Narrated by actor Gary Sinise, it provides an immersive, high-definition look at the United States' journey into space, from the earliest Mercury flights to the assembly of the International Space Station. Key Highlights and Production

: The series is noted for featuring remastered footage from NASA’s archives. Producers reviewed over 500 hours of film—some of which had actually been to the Moon—and converted more than 100 hours into HD for the first time. When We Left Earth: The NASA Missions

: After production, the HD copies of the remastered footage were donated back to NASA to ensure the preservation of these historical records. Episode Breakdown is a six-part documentary miniseries that originally aired

The series received praise for its visuals and emotional depth. Some sources noted that the dramatic tone occasionally prioritized risks and "near-death" exploits over technical milestones. Reviewers from DVD Talk and Space.com highlighted its value as both a historical record and an educational tool. Producers reviewed over 500 hours of film—some of

The Apollo program’s race to the Moon and the success of Apollo 11. The Explorers