March 23, 1965

Air Force Maj. Virgil I. “Gus” Grissom becomes the first astronaut in the manned spaceflight program to go aloft a second time, as he and Navy Lt. Cmdr. John W. Young are launched on the first Gemini mission, Gemini 3. This three-orbit, four-hour, 53-minute shakedown flight is also the first time a spacecraft’s orbit is changed in space.