This is a wonderful documentary about the Apollo program, told from the perspective of the Apollo astronauts. In the movie, we meet many of the Apollo astronauts; these are the only humans ever to have set foot on another planet, or to have seen the whole earth from space. It seems to me that the director took a leap of faith that these people would have something interesting to say for that reason alone. To his credit, he was right. Their stories are interesting, and their perspective is worth hearing.