Gemini 11Gemini 11 lifts off on a three-day mission to continue validating rendezvous, docking and spacewalking techniques that will be needed on the upcoming Apollo lunar missions. With Pete Conrad and Dick Gordon aboard, Gemini 11 becomes the furthest manned object from Earth, using an Agena booster to push itself into a higher orbit that takes Gemini 850 miles away from Earth at its furthest point. After three days of docking, spacewalks and orbit-changing exercises, Gemini 11 returns to Earth.