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the study of moon, stars and other objects |
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an imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates |
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the spinning motion of a planet about its axis
ex) The earth's rotation on its axis causes day and night. |
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the movement of an object around another object |
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the path of an object as it revolves around another object |
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a measurement of distance from the equator, expressed in degrees north or south. |
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the two days of the year on which the noon sun is directly overhead at either 23.5* South or 23.5* North |
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