Project Gemini was a crucial stepping stone to the Apollo moon landings. Gemini astronauts pioneered spacewalking and spacecraft docking techniques. Gemini missions were incredibly risky, with ...

"Hooven-Dayton Co. [printer], November 1965." "This document supersedes document dated 15 March 1964 and includes change dated 31 December 1964." "Section 8 [Guidance and control systems] is contained ...