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 NASA to serve as the department's first chair. Later, he produced a computer strategy game called "Buzz Aldrin's Race Into Space" (1993). To further promote space exploration, and to commemorate the 40th anniversary of the first lunar landing, Aldrin teamed up with Snoop Dogg, Quincy Jones, Talib Kweli, and Soulja Boy to create the rap single and video, "Rocket Experience", with proceeds from video and song sales to benefit Aldrin's non-profit foundation, ShareSpace. In 1985, Aldrin proposed a special spacecraft trajectory now known as the Aldrin cycler. His proposed system of cycling spacecraft makes travel to Mars possible using less