Are you a lunatic? In the astronomical, not psychiatric sense? Like this author, have you been a Moon lover for as long as you can remember? Have the days of Apollo and observing and photographing the Moon cemented your relationship with Luna, Selene and all the names humanity has called our nearest celestial body? The Moon and Earth comprise a kind of double-planet system, as indicated in Chap. 8. As you will see we really are almost symbiotic with the Moon.