In the 20 months following the first piloted Gemini mission, NASA astronauts demonstrated the ability to change orbits, perform rendezvous and docking, along with spending up to two weeks in space. Spacewalking, on the other hand, remained an enigma. With only one more Gemini flight on the schedule, solving the problems of working outside a spacecraft would be the primary goal for Gemini XII.
NASA’s Gemini IX mission was another step in developing technology for future spaceflights from Apollo to the agency’s upcoming Artemis Program designed to return astronauts to the Moon followed by exploration of Mars. But, this 1966 mission included developing alternate plans when faced with the unexpected.
The flights of two piloted spacecraft during December 1965 were major strides forward in advancing NASA’s capabilities in human spaceflight. While Gemini VII orbited the Earth for two weeks, Gemini VI was launched, completing the first-ever rendezvous between two spacecraft in orbit. This marked the point in which the United States clearly pulled ahead in the space race with the Soviet Union.
Building on the success of the first piloted Gemini mission, NASA prepared to launch its most ambitions flight to date – Gemini IV. During June 1965, two astronauts would not only stay in orbit four days, one would attempt America’s first spacewalk. It was another example of advancing technology enabling new avenues of exploration.