Gemini 9, manned with two astronauts, was the seventh earth-orbiting spacecraft of the Gemini series. The blunt, cone-shaped spacecraft was 3.048 cm in diameter at the rear of the craft. ... Primary mission objectives were to demonstrate (1) three rendezvous techniques, (2) an extravehicular activity (EVA) to test the astronaut maneuvering unit (AMU), and (3) precision landing capability. scientific objectives included obtaining zodiacal light and airglow horizon photographs. Two micrometeorite studies were to be carried out, and there were also one medical and two technological experiments. the agena target vehicle failed to achieve orbit, and the agena micrometeorite experiment hardware was lost. Other experiments functioned normally. The three rendezvous techniques were demonstrated, although docking could not be achieved due to a failure of the augmented target-docking shroud to jettison. The EVA was curtailed due to fogging of the visor and energy expended by the astronaut. Reentry was routinely accomplished after 47 orbits on june 6, 1966, within 3.2 km of the target point.