At 9:34 a.m. Eastern time on May 5, 1961, after more than two hours of technical delays, a Redstone rocket engine ignited on Launch Pad 5 at Cape Canaveral Air Force Station in Florida. Mounted atop the booster was Freedom 7, a bell-shaped single-seat capsule built by the McDonnell Aircraft Corporation. Inside sat naval aviator Alan B. Shepard. An estimated 45 million television viewers watched live across the United States as NASA attempted to send its first astronaut into space.
The Selection and the Secret
Project Mercury began in 1958 under NASA’s Space Task Group at Langley Research Center in Hampton, Virginia. Its directives were clear: orbit a crewed spacecraft, investigate human ability to function in space, and safely recover both pilot and craft. NASA selected seven military test pilots in April 1959. On January 19, 1961, Space Task Group leader Robert R. Gilruth informed the group that Shepard would fly the initial suborbital mission.
NASA kept the specific pilot assignment unannounced to the public until shortly before launch. To validate the hardware, NASA flew chimpanzee Ham on a suborbital test on January 31, followed by a final uncrewed test flight on March 24. Meanwhile, the Soviet Union achieved the first human orbital flight when Yuri Gagarin orbited Earth on April 12.
Ignition at Pad 5
On launch morning, Shepard boarded Freedom 7 while Flight Director Christopher C. Kraft managed ground operations from Mercury Control. Astronaut Donald "Deke" Slayton served as capsule communicator, maintaining direct radio contact with Shepard inside the vehicle.
The Redstone engine burned for 2 minutes and 22 seconds before shutting down, jettisoning the launch escape tower, and separating the capsule ten seconds later. As Freedom 7 detached from the booster, Shepard entered weightlessness and began visual observations of the cloud-covered Atlantic Ocean below.
Taking Manual Control Above the Atmosphere
At 3 minutes and 10 seconds into the flight, Shepard took manual control of the spacecraft's attitude, manipulating Freedom 7’s orientation with precision across pitch, yaw, and roll axes. The capsule reached its peak altitude of 116 miles at 5 minutes and 11 seconds.
Re-entry began following the retro-fire maneuver. At an altitude of 230,000 feet, Freedom 7 hit the upper atmosphere, exposing Shepard to decelerative forces up to 11 times Earth's gravity. A drogue parachute deployed at 22,000 feet, followed by the main parachute at 10,000 feet and a landing cushion at the base.
Splashdown and the Lunar Commitment
Freedom 7 splashed down 300 miles southeast of Cape Canaveral after a flight lasting 15 minutes and 22 seconds. Recovery helicopters from the aircraft carrier USS Lake Champlain retrieved Shepard and his capsule within 20 minutes, bringing them to the deck just four miles from the splashdown site.
On May 8, Shepard received NASA's Distinguished Service Medal from President John F. Kennedy in the Rose Garden before joining a motorcade to the Capitol in Vice President Lyndon B. Johnson's limousine. Building directly on the technical proof of Shepard's successful suborbital flight, President Kennedy addressed a joint session of Congress on May 25, 1961, committing the United States to landing an astronaut on the Moon before the decade ended.
AI-generated editorial illustration; not a documentary photograph.
Source: May 5, 1961: Alan Shepard Becomes the First American in Space
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