Astronaut Scott Carpenter inspects Aurora 7 Poster

Mercury Atlas 7 (MA-7, also designated Aurora 7) was the second orbital flight of an American rocket with a human on board. The pilot was originally planned to be Donald K. Slayton but was changed to be M. Scott Carpenter after a medical examination of Slayton revealed an irregularity in his heartbeat. The objectives of MA-7 were similar to MA-6, i.e. to: (1) evaluate the performance of a man-spacecraft system in a three-orbit mission; (2) evaluate the effects of space flight on the astronaut; (3) obtain the astronaut's opinions on the operational suitability of the spacecraft systems; (4) evaluate the performance of spacecraft systems replaced or modified as a result of previous missions; and, (5) exercise and evaluate further the performance of the Mercury Worldwide Network.