Gemini 12 launched Buzz Aldrin and Jim Lovell in 1966

On Nov. 11, 1966, NASA launched the Gemini 12 mission with Buzz Aldrin and Jim Lovell aboard, sending an astronaut crew into orbit. For anyone working in aerospace, it is a useful reminder that major programs are built on a series of missions, each one testing systems, procedures and crew performance. Gemini 12 was also a key step that set the stage for NASA's Apollo program. Looking back at milestones like this shows how mission planning, crew training and flight operations connect across decades. Teams today still rely on those same foundations, whether they work on spacecraft, ground systems or mission support. What lessons from early crewed missions do you see applied in modern space programs?