9. John Watts Young
John was the commander of the Apollo 16 mission in 1972. He has spent 42 years of active NASA service and the longest career of any astronaut. John Watts Young is the first person to fly six space mission counting his lunar liftoff and seven launches in his career.
10. Charles M. Duke JR.
Charles M. Duke JR. is the youngest and tenth person to walk on moon surface. He was the member of Apollo 16 mission in 1972 as a Lunar Module pilot. Charles spend 4147 hours flying in space in which he spend 3632 hours in jet aircraft, 265 hours in space and 20 hours plus 15 minutes of extravehicular activity. He was a retired U.S Air force officer, test pilot and a former astronaut.
11. Harrison Jack Schmitt
He landed on moon surface in 1972 as a lunar module pilot of Apollo 17 mission. He was a scientist or a geologist first and actually the first scientist to travel in outer space and the landed on the moon surface.
12. Eugene E. CERNAN
He was the commander of Apollo 17 mission in 1972 and the last person to appear on the moon surface. In this mission he said, I am on the surface as I take man’s last step from moon, back home for some time to come. But we hope not so long into future. I would like to say what I believe history will record. America’s challenge of today has forged man destiny of tomorrow. He further added that, as we leave the moon at Taurus-littrow, we leave as we came and God willing, as we shall return with peace and hope for all mankind. God speed the crew of Apollo17.