Gemini 8 launched on 16 March 1966, piloted by ormer naval aviator Neil A. Armstrong. Gemini 8 completed seven orbits in 10 hours and 41 minutes at an altitude of 161.3 nautical miles. This was the first mission to link two spacecraft together in Earth orbit. After 30 minutes, the crew was force to undock with the Agena vehicle due to problems with the Gemini spacecraft control systems. Recovery was by USS Leonard F. Mason (DD-852).
For more information, visit NASA’s Gemini Program webpage.