Gemini 6A was a manned spaceflight in NASA’s Gemini program. It was the fifth manned Gemini flight, the thirteenth manned American flight and the twenty-first spaceflight of all time. It was the last United States spacecraft to be flown using batteries as the primary power source.
Gemini 6 was originally intended to be the first mission to dock with an Agena Target Vehicle. However, after a failure in the Agena Target six minutes after its launch, the mission was canceled. NASA decided to substitute an alternate mission: a meeting in space of two Gemini spacecraft. Gemini 6A would launch eight days after the launch of Frank Borman and Jim Lovell’s Gemini 7.
Walter Schirra and Thomas Safford made it into orbit three days later in the Gemini 6A. Using guidance from the computer as well as his own piloting, Schirra performed the space rendezvous with the companion spacecraft in orbit on the afternoon of December 15. Once in formation, the two Gemini capsules flew around each other, coming within a foot of each other, but never touching. One of Gemini’s primary goals – orbital rendezvous – had been achieved.










































