Buzz Aldrin shot down two MiG-15 aircraft. After earning a Sc.D. degree in astronautics from the Massachusetts Institute of Technology, Aldrin was selected as a member of NASA's Astronaut Group 3, making him the first astronaut with a doctoral degree. His doctoral thesis was "Line-of-Sight Guidance Techniques for Manned Orbital Rendezvous", earning him the nickname "Dr. Rendezvous" from fellow astronauts. His first space flight was Gemini 12 during which he spent over five hours on extravehicular activity (EVA) outside the spacecraft. Aldrin set foot on the Moon at 03:15:16 on July 21, 1969 (UTC), nine minutes after Armstrong first touched the surface,
Buzz Aldrin trailblazing mission; rendezvous from above had already been successfully performed by Gemini 9, and the tethered vehicle exercise by Gemini 11. Even gravity-gradient stabilization had been attempted by Gemini 11, albeit unsuccessfully. Gemini 12 was launched from Launch Complex 19 at 20:46 UTC on November 11, 1966. The Gemini Agena Target Vehicle was launched about an hour and a half before. The mission's first major objective was to rendezvous with this target vehicle. As the target and Gemini 12 capsule drew closer together, radar contact between the two deteriorated until it became unusable, forcing the crew to rendezvous manually. Aldrin