Since the fourth day of creation, a beautiful silvery object we call the moon has orbited the earth, flooding the landscape with a soft light that engenders romantic expressions in poetry, song, and in the minds of earth-bound creatures. Earthbound, that is, until July 20, 1969, when the landing module of Apollo 11 touched down on the surface of the moon, and for the first time in the history of mankind, humans actually had their abode, as temporary as it was, on a body other than the earth.