Charles Moss "Charlie" Duke Jr. is an American former astronaut, retired U.S. Air Force officer and test pilot. As Lunar Module Pilot for Apollo 16 in 1972, he became the tenth and youngest person to walk on the Moon. Duke has logged 4,147 hours flying time, which includes 3,632 hours in jet aircraft; and 265 hours in space, plus 20 hours and 15 minutes of extravehicular activity. A resident of New Braunfels, Texas, he is currently chairman of the board of directors of the Astronaut Scholarship Foundation.