Phases Under half a moon, Hear a hundred cricket-chirps Falling into phase. - Bob Eklund, Los Angeles, California, U.S.A. (From the book “First Star I See Tonight,” copyright 2007 by Robert L. Eklund.) As we begin Lunar Week, the moon is at its “First-Quarter” phase—meaning that it has moved through ¼ of its month-long orbit around the Earth since its position between the Earth and Sun (called “New Moon”) just a week ago. First-Quarter Moon is also referred to informally as a half-moon, or “half a moon,” because (from our perspective on Earth) we see half of it lit by...