Geology guru Lee Silver helps Dave Scott and his Apollo 15 crew unravel the moon's mysterious origins by teaching them to become his lunar surrogates, and thus the first fully-trained “field observers” on another world.

The bittersweet end of the Apollo program—and the final manned journey to another planet—is juxtaposed with a light-hearted recreation of the first cinematic imagining of such an endeavor, the 1902 French silent classic “Voyage to the Moon.”