The moon is our closest neighbor, the moon revolves around the sun. moon takes 27.3 days to orbit around the earth, the far side of the moon always faces away from the earth and is never seen. The moon has no atmosphere it reflects light. 8 phases of the moon new waining 3rd gibbous full gibbous first crescent. 2 types of eclipses solar and lunar.umbra the darkest and smallest part of the shadow. penumbra largest part of the shadow. lunar eclipse is when the moon in the earth umbra there is a total lunar eclipses. partial lunar is when the moon passes into the penumbra of the earths shadow. the moons gravity pulls earths water toward itself and away from 2 opposite places creating low tides. all 4 tides rotate in a 25 hour cycle. spring tide great change neap tide little change twice a month.