Mercury-Redstone 3, or Freedom 7, was the first United States human spaceflight, on May 5, 1961, piloted by astronaut Alan Shepard. It was the first manned flight of Project Mercury, the objective of which was to put an astronaut into orbit around the Earth and return him safely. Shepard's mission was a 15-minute suborbital flight with the primary objective of demonstrating his ability to withstand the high g-forces of launch and atmospheric re-entry.
SuborbitalUncrewed test flight of the Mercury program. The launch proceeded normally until about T+20 seconds when the pitch and roll sequence failed to initiate and the vehicle instead just continued flying straight upward, requiring early termination of the flight.
SuborbitalAn experiment where an actual 'artificial meteorite' was flown. This was a 5.8 g steel pellet, which was driven into the atmosphere at 6 km/sec by a 'seventh stage', a shaped charge that accelerated the pellet after burnout of the rocket's six stage. This experiment provided a known reference by which the size of actual meteoroids could be measured according to the luminance of their trails.
SuborbitalThe first crewed space launch & the first orbital launch. It carried the Soviet cosmonaut Yuri Gagarin who completed 1 orbit before safely re-entering the atmosphere, he ejected from his capsule at an altitude of 7 km in order to parachute safely to the ground. The mission lasted 108 minutes.
Low Earth Orbit