"As this history recedes into the background and fewer and fewer people remember it, the more mythological it becomes," he said. "The majority of the human race has been born since we've left the moon so they don't have knowledge of it."
9 prominent early astronauts carrying on US space history →
"He's your classic sort of handsome debonair flyboy," said space historian Roger Launius, associate director of the Smithsonian Air and Space Museum.
Gene Cernan, last astronaut to walk on the moon, dies at 82 →