Charles Moss Duke Jr. is an American former astronaut, U.S. Air Force officer and test pilot. As lunar module pilot of Apollo 16 in 1972, he became the tenth and youngest person to walk on the Moon, at age 36 years and 201 days.
A 1957 graduate of the United States Naval Academy, he joined the USAF. He completed advanced flight training on the F-86 Sabre at Moody Air Force Base in Georgia, where he was a distinguished graduate. After completion of this training, Duke served three years as a fighter pilot with the 526th Fighter-Interceptor Squadron at Ramstein Air Base in West Germany. After graduating from the Aerospace Research Pilot School in September 1965, he stayed on as an instructor teaching control systems and flying in the F-101 Voodoo, F-104 Starfighter, and T-33 Shooting Star.
In April 1966, Duke was one of nineteen men selected for NASA's fifth group of astronauts. In 1969, he was a member of the astronaut support crew for Apollo 10. He served as CAPCOM for Apollo 11, the first crewed landing on the Moon.