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 He chose the United States Air Force, which had become a separate service in 1947, while Aldrin was still at West Point, and did not yet have its own academy. He was commissioned as a second lieutenant, and underwent basic flight training in T-6 Texans at Bartow Air Base in Florida. His classmates included Sam Johnson, who later became a prisoner of war in Vietnam. The two became lifelong friends. At one point, Aldrin attempted a double Immelmann turn in a T-28 Trojan and suffered a grayout. He recovered in time to pull out at , averting what would have