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Definition
| the study of the universe. |
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| An event in which the shadow of one celestial body falls on another. |
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Definition
| the change in the sunlit area of one celestial body as seen from another celestial body. |
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Definition
| A natural or artificial body that revolves around a planet. |
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Definition
| The moon is less than one-half illuminated by the sun but less than one quarter illuminated. Occurs when the moon's illumination is increasing, |
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Definition
| When the moon's disk is light because the Earth is between the sun and the moon. |
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Definition
| The moon is more than one-half illuminated by the sun but not completely illuminated. Occurs when the moon's illumination is increasing, |
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Definition
| The moon is one-half illuminated by the sun. Occurs when the moon's illumination is decreasing, |
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Definition
| The moon is not visible in the sky. Except during a solar eclipse |
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Definition
| The moon is more than one-half illuminated by the sun but not completely illuminated. Occurs when the moon's illumination is decreasing |
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Definition
| The moon is one-half illuminated by the sun. Occurs when the moon's illumination is increasing, |
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Term
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Definition
| The moon is less than one-half illuminated by the sun but less than one quarter illuminated. Occurs when the moon's illumination is decreasing, |
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