Charles Moss "Charlie" Duke, Jr. (born October 3, 1935) is a retired US Air Force brigadier general, and a former United States astronaut for NASA. As lunar module pilot for Apollo 16 in 1972, he became the tenth and youngest person to walk on the Moon. A former test pilot, Duke has logged 4,147 hours flying time, which includes 3,632 hours in jet aircraft; and 265 hours in space, plus 21 hours and 28 minutes of extra-vehicular activity A resident of New Braunfels, Texas, he is currently chairman of the board of directors of the Astronaut Scholarship Foundation.