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.
Retired American astronaut Jim Lovell commanded the iconic Apollo 13 mission and was one of the first three human beings to fly to the Moon, orbit it, and get back to Earth. He had also been a US Navy captain. Following his retirement, Lovell launched a restaurant in Lake Forest.
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.
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
Christa McAuliffe was an American astronaut and teacher who died while serving as a payload specialist on board Space Shuttle Challenger, which exploded during STS-51-L. McAuliffe was all set to become the first teacher in space as she was part of the NASA Teacher in Space Project. In 2004, she was posthumously honored with the Congressional Space Medal of Honor.
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.
14 Mark Kelly
Mark Kelly is a businessman, politician, retired U.S. Navy captain, and former astronaut. He is the current junior US Senator from Arizona. As a naval aviator, he played a major role during the Gulf War where he flew combat missions after which he was chosen as a NASA Space Shuttle pilot. In 2008, he commanded the Space Shuttle mission STS-124.
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.
17 Scott Kelly
Chris Hadfield is a Canadian former astronaut, engineer, and singer. Hadfield, who has served in the International Space Station as a commander, is credited with flying two Space Shuttle missions. He is also the first Canadian to successfully carry out an extravehicular activity in space. Before becoming an astronaut, he served as an Air Command fighter pilot for 25 years.
19 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.
Part of the seven Project Mercury astronauts, Gordon Cooper manned a 34-hour space mission, becoming the first American to stay for a day in space. As part of the Gemini 5 mission, he and his co-pilot proved it was possible for astronauts to survive a mission to the Moon and back.
21 Lisa Nowak
Former NASA astronaut and U.S. Navy captain Lisa Nowak was part of the STS-121 mission. She made headlines when she apparently attempted to kidnap Air Force captain Colleen Shipman, who was getting into a relationship with astronaut William Oefelein, who had previously dated Nowak. Nowak was subsequently dismissed from NASA.
A doctorate in physics from MIT Cambridge, Ronald McNair worked on chemical lasers before joining NASA and in 1984 flew as a mission specialist on STS-41-B aboard Challenger, becoming the second African-American to do so. In January 1986, he was selected to fly on STS-51-L, but was killed along with rest of the crews when Challenger disintegrated soon after liftoff.
24 John Young
25 Jonny Kim
26 Bill Nelson
Judith Resnik was an American software engineer, electrical engineer, pilot, biomedical engineer, and NASA astronaut. She was the fourth woman and the first Jewish woman in space, logging 145 hours in orbit. Resnik, who died during the Space Shuttle Challenger disaster in 1986, received several posthumous honors. Judith Resnik’s life and career inspired the 1990 TV movie Challenger.
28 Fred Haise
29 Deke Slayton
30 Pete Conrad
32 Frank Borman
34 Ed White
The first woman to command the International Space Station, NASA astronaut Peggy Whitson was born to farmers and decided to become an astronaut after watching the moon landing on TV. She also boasts of a PhD in biochemistry and has been a researcher and educator of biochemistry and genetic engineering.
36 Dick Scobee
43 Alan Bean
48 Charles Duke
Mark Shuttleworth is a South African-British entrepreneur. He is credited with founding Canonical, the company that developed the popular Linux-based Ubuntu operating system. Mark Shuttleworth became the first African from an independent country and the first South African to travel to space; he traveled as a space tourist in 2002.