High Quality Content by WIKIPEDIA articles! Gemini 11 (officially Gemini XI) was the ninth manned spaceflight mission of NASA`s Project Gemini, which flew from September 12 to 15, 1966. It was the 17th manned American flight and the 25th spaceflight to that time (includes X-15 flights over 100 kilometres (62 mi)). Astronauts Charles "Pete" Conrad, Jr. and Richard F. Gordon, Jr. performed the first-ever direct-ascent (first orbit) rendezvous with an Agena Target Vehicle, used the Agena rocket engine to achieve a world record high-apogee earth orbit, and created a small amount of artificial gravity by spinning the two spacecraft connected by a tether. Gordon also performed two extra-vehicular activities for a total of 2 hours and 41 minutes.