Project Mercury was the first
human spaceflight program of the United States running from 1958 through 1963. An early highlight of the
Space Race, its goal was to put a human into Earth
orbit and return the person safely, ideally before the
Soviet Union. Taken over from the
U.S. Air Force by the newly created civilian space agency
NASA, it spanned twenty unmanned developmental missions involving test animals, and successful missions completed by six of the seven
Mercury astronauts.