First 4 Men who walked on the MOON

Neil Alden Armstrong (August 5, 1930 – August 25, 2012) was an American astronaut and the first person to walk on the Moon. He was also an aerospace engineer, naval aviator, test pilot, and university professor. Before becoming an astronaut, Armstrong was an officer in the U.S. Navy and served in the Korean War. After the war, he earned his bachelor's degree at Purdue University and served as a test pilot at the National Advisory Committee for Aeronautics High-Speed Flight Station, now known as the Dryden Flight Research Center, where he logged over 900 flights. He later completed graduate studies at the University of Southern California.

A participant in the U.S. Air Force's Man in Space Soonest and X-20 Dyna-Soar human spaceflight programs, Armstrong joined the NASA Astronaut Corps in 1962. He made his first space flight, as command pilot of Gemini 8, in 1966, becoming NASA's first civilian astronaut to fly in space. On this mission, he performed the first docking of two spacecraft, with pilot David Scott.

Buzz Aldrin (born Edwin Eugene Aldrin, Jr.; January 20, 1930) is an American engineer and former astronaut, and the second person to walk on the Moon. He was the Lunar Module Pilot on Apollo 11, the first manned lunar landing in history. He set foot on the Moon at 03:15:16 (UTC) on July 21, 1969, following mission commander Neil Armstrong. He is also a former U.S. Air Force officer and a Command Pilot.

Charles "Pete" Conrad, Jr. (June 2, 1930 – July 8, 1999), was an American naval officer and aviator, aeronautical engineer, test pilot, and NASA astronaut, and during the Apollo 12 mission became the third man to walk on the Moon. He set an eight-day space endurance record along with his Command Pilot Gordon Cooper on the Gemini 5 mission, and commanded the Gemini 11 mission. After Apollo, he commanded the Skylab 2 mission (the first manned one), on which he and his crewmates repaired significant launch damage to the Skylab space station. For this, President Jimmy Carter awarded him the Congressional Space Medal of Honor in 1978.

Alan LaVern "Al" Bean (born March 15, 1932), is an American former naval officer and aviator, aeronautical engineer, test pilot, and NASA astronaut; he was the fourth person to walk on the Moon. Bean was selected to become an astronaut by NASA in 1963 as part of Astronaut Group 3. He made his first flight into space aboard Apollo 12, the second manned mission to land on the Moon, at the age of thirty-seven years in November 1969. He made his second and final flight into space on the Skylab 3 mission in 1973, the second manned mission to the Skylab space station. After retiring from the United States Navy in 1975 and NASA in 1981, Bean pursued his interest in painting, depicting various space-related scenes and documenting his own experiences in space as well as that of his fellow Apollo Program astronauts.