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,
First Man: The Life of Neil A. Armstrong to that airport." The young Armstrong becomes a naval aviator. Management of the National Aeronautics and Space Administration (NASA) takes an interest in Armstrong's combination of calmness and personal skill coupled with his above-average intellect. Although contrasting somewhat with many of his colleagues, the Apollo 11 crew winding up as "amiable strangers", he attracts widespread respect. The fact that Armstrong gets chosen to be "first down" on the lunar surface is a surprise, with astronaut Edwin "Buzz" Aldrin Jr. being expected to get priority. The mission itself proceeds spectacularly well, and Armstrong gives his famous line: "That's one small step