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astronomy

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the study of the earth, moon, stars and other objects in space

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revolution

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the movement of one object around another object

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rotation

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The spinning of Earth on its axis

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orbit

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The path of an object as it revolves around another object in space

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latitude

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imaginary lines that are parallel to Earth's equator

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axis

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The imaginary line that passes through Earth's center and the North and South poles.

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equinox

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when day and night are of equal length

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solstice

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Longest or shortest day of the year

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seasons

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one of four parts of a year to include summer, spring, fall, winter

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moon

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A natural satellite that revolves around a planet - such as Earth