The first person to walk on the Moon, Neil Armstrong was an astronaut and aeronautical engineer. Prior to his trip to the Moon, he became NASA's first civilian astronaut to fly in space. After resigning from NASA, he taught in the Department of Aerospace Engineering at the University of Cincinnati. He was a Presidential Medal of Freedom awardee.
Alan Shepard was an astronaut and the first American to travel into space. In 1971, Shepard became the fifth and oldest astronaut to walk on the Moon; he was 47 years and 80 days old at that time. From 1963 to 1969, he played an important role as the Chief of the Astronaut Office. His work inspired several TV series.
The first American to orbit the Earth, John Glenn was an astronaut, aviator, politician, and businessman. Beginning his career as an army man, he was a fighter pilot in World War II. He later joined NASA and was one of the Mercury Seven. Following his retirement from NASA, he became a politician and served in the US Senate.
Gus Grissom was the second U.S. astronaut to fly into space. The Distinguished Flying Cross-winner had fought in World War II and the Korean War before being part of Mercury-Redstone 4 and Project Gemini. He died during a pre-launch test of the Apollo 1 mission, along with two colleagues.
10 Jim Lovell
11 Scott Kelly
12 Deke Slayton
16 Sally Ride
Michael Collins is an American astronaut who became the fourth person to perform a spacewalk. He is also the second person to orbit the Moon alone. Collins is best known for flying the Apollo 11 command module Columbia while Buzz Aldrin and Neil Armstrong landed on the Moon. In 1969, Michael Collins was honored with the Presidential Medal of Freedom.