50 years on, Apollo 16 moonwalker still ‘excited’ by space

  • Retired NASA astronaut Charlie Duke speaks to a group of middle school students at the South Carolina State Museum on Friday in Columbia, S.C. Duke, 86, is one of four U.S. astronauts still living who walked on the moon during the Apollo program. (AP Photo/Meg Kinnard)

COLUMBIA, S.C. — Fifty years after his Apollo 16 mission to the moon, retired NASA astronaut Charlie Duke says he’s ready for the U.S. to get back to lunar exploration.