Apollo 16 (April 16–27, 1972) was the tenth crewed mission in the United States Apollo space program, administered by NASA, and the fifth and penultimate to land on the Moon. The mission was crewed by John Young, Commander; Charles Duke, Lunar Module Pilot; and Ken Mattingly, Command Module Pilot. Launched from the Kennedy Space Center in Florida on April 16, 1972 (pictured), Apollo 16 experienced a number of minor glitches en route to the Moon. These culminated with a problem with the spaceship's main engine that resulted in a six-hour delay in the Moon landing. Young and Duke explored the Descartes Highlands, a site thought volcanic, although this proved to be not so. Mattingly orbited the Moon in the command and service module, taking photos and operating scientific instruments. During the return trip to Earth, Mattingly performed a one-hour spacewalk to retrieve several film cassettes from the exterior of the service module. Apollo 16 returned safely to Earth on April 27, 1972. (Full article...)