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1Astro 102/1041Lecture #5: Earth, Moon, & Sky II•Lunar Phases and Motions.Lunar Phases and Motions.•Tides.Tides.•Eclipses.Eclipses.Astro 102/1042The Main PointThe Moon’s size and orbit lead to many interesting phenomena: changing phases, tides, and eclipses.Astro 102/1043Phases and Motions of the Moon•The Moon orbits the Earth in an inclined (~5°) and slightly elliptical (0.055) orbit about 60 Earth radii away.•The Moon's appearance in the sky (its phase) changes considerably as it orbits the Earth.–The result of changing illuminationby the Sun.Astro 102/1044
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