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Revolution
an object around another object
rotation
is the spin of an object around its axes
equinox
when the earths rotation axis is neither toward or away from the sun
waxing
when a portion of the moon gets larger
tide
the periodic rise and fall of the oceans
waning
a portion of the moon that gets smaller
eclipse
the movement of the solar system
solstice
happens in June and December
Geocentric
Geo means rock and Centric means center, the old thinking Earth Center of solar system
Heliocentric
Helio is the sun and centric is the center New thinking sun is center we move around the sun.
Elliptical
orbits the earth around the sun
AU
Astronomical Unit (AU) 150 million Km