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Definition
| the study of the moon, stars, and other objects in space |
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Definition
| an imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates |
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Definition
| the spinning motion of a planet on its axis |
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Definition
| the movement of an object around another object |
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Term
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Definition
| the path of an object as it revolves around another object in space |
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Definition
| the two days of the year on which the sun reaches its greatest distance north or south of the equator |
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Definition
| the two days of the year on which neither hemisphere is tilted toward or away from the sun |
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Term
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Definition
| a system of organizing time that defines the beginning, length, and divisions of a year |
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