This is the Apollo 16 lunar landing mission crew portrait. Pictured from left to right are: Thomas K. Mattingly II, Command Module pilot; John W. Young, Mission Commander; and Charles M. Duke Jr., Lunar Module pilot. Launched from the Kennedy Space Center on April 16, 1972, Apollo 16 spent three days on Earth's Moon. The first study of the highlands area, the landing site for Apollo 16 was the Descartes Highlands. The fifth lunar landing mission out of six, Apollo 16 was famous for deploying and using an ultraviolet telescope as the first lunar observatory. The telescope photographed ultraviolet light emitted by Earth and other celestial objects. The Lunar Roving Vehicle, developed by the Marshall Space Flight Center, was also used for collecting rocks and data on the mysterious lunar highlands. In this photo, astronaut John W. Young photographs Charles M. Duke, Jr. collecting rock samples at the Descartes landing site. Duke stands by Plum Crater while the Lunar Roving Vehicle waits parked in the background. High above, Thomas K. Mattingly orbits in the Command Module. The mission ended April 27, 1972 as the crew splashed down into the Pacific Ocean.