I just watched the documentary about him, The Last Man on the Moon, a couple of months ago. He accompanied the only scientist to ever visit the moon, Harrison Schmitt, a geologist. Among all the astronauts, Gene Cernan was probably the most skilled and undoubtedly the biggest character. This is one of my favorite photos of the Apollo program. Not only do you see Cernan with lunar dust smudged on his face, but also a perspective of just how small the Lunar Module was. Schmitt took the photograph from only a few feet away - the other side of the module. The lunar suits and helmets are piled on the engine cover which was positioned in the center of the module. They lived, ate, and performed bodily functions in this cramped space for three days with walls as thick as three sheets of aluminum foil stacked together to keep the instant death of the vacuum of space at bay. 

 

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