NASA Programs
Project Gemini
The bridge to the Moon: rendezvous, docking, spacewalks, and two-week endurance flights.
Project Gemini was designed as the bridge between Mercury and Apollo. Two astronauts flew together in a larger capsule. The Titan II launch vehicle and a set of onboard thrusters let crews change their orbits—something Mercury could barely do.
In twenty months, ten crewed Gemini flights practiced everything Apollo would need. Ed White made the first American spacewalk on Gemini 4. Gemini 6A and 7 flew in formation feet apart—the first true space rendezvous. Gemini 8 achieved the first docking of two spacecraft, then recovered from a stuck thruster. Buzz Aldrin’s carefully planned spacewalks on Gemini 12 showed that useful work outside a vehicle was possible.
By the end of 1966, NASA had the techniques for lunar missions. What remained was the much larger Apollo stack and a deeper understanding of how to keep crews alive far from Earth.
Milestones
- 1965-03-23Gemini 3 — Gus Grissom and John Young fly the first crewed Gemini and change their own orbit.
- 1965-06-03Gemini 4 — Ed White’s spacewalk lasts about 20 minutes—the first American EVA.
- 1965-12-15Gemini 6A / 7 — Two crewed spacecraft rendezvous and fly in close formation.
- 1966-03-16Gemini 8 — Neil Armstrong and David Scott achieve the first docking of two spacecraft.
- 1966-11-11Gemini 12 — Buzz Aldrin’s EVAs close out the program and prove useful work outside a capsule.
Summary original to flyARIA.com. Photograph: NASA. NASA images are generally not protected by copyright in the United States; credit does not imply endorsement.