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.
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.
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.
Sunita Williams is an American US Navy officer and astronaut. She formerly held the records for most spacewalk time for a woman and most spacewalks by a woman. In 2007, she became the first person to run a marathon in space. She has several honors under her belt, including a NASA Spaceflight Medal, Humanitarian Service Medal, and Navy Commendation Medal.
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 Sally Ride
11 Mark Kelly
12 Mae Jemison
Former NASA astronaut Mae Jemison became the first Black woman to fly into space, as a mission specialist on the Space Shuttle Endeavour. A qualified physician, she has served as a Peace Corps doctor, too. She has written several books and established a non-profit and a tech research organization.
13 Yuri Gagarin
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.
Soviet cosmonaut Vladimir Komarov was the first from his country to fly into space twice. He died when his Soyuz 1 capsule crashed while re-entering the Earth, due to a parachute failure, on April 24, 1967, which made him the first human to die in a space flight.
21 Lisa Nowak
22 Jack Swigert
Jack Swigert was an American astronaut who flew to the moon and spent nearly six days in space. He was an engineer who also held a masters degree in business administration. He was involved in the infamous Apollo 15 postal covers incident. He ventured into politics with mixed fortunes. He was elected to the US Congress but died before being sworn in.