Return to Astronomy Index pagePhases of the Moon
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The Moon orbits the Earth every 27.2 days. Each orbit is mark with the passing of the light crossing the face of the Moon. Waxing phases of the Moon show a gain like across the surface of the Moon, while the waning phases of the Moon show lessen of the lighted surface. A new Moon is totally dark and cannot be seen from the surface of the Earth. A Full Moon is when the entire surface facing the moon is completely illuminated.