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| The imaginary line on which the Earth is tilted and rotates |
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| The total or partial covering up of one celestial body by another; example: solar eclipse, lunar eclipse |
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| The days in which night and day are approximately equal length all over the earth and occurring about March 21 and September 22 |
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| Any of the very large groups of stars and associated matter that are found throughout the universe |
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| When the Moon's light is covered up by Earth's shadow (The Earth is between the Moon and Sun); also known at the "Blood Moon" |
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| A representation to show the construction or appearance of something |
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| Times of the year caused by the revolution of the Earth around the Sun and the tilt of the Earth on its axis |
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| When the Sun's light is covered up by the Moon (The Moon is between the Sun and Earth) |
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| The two times a year when the sun is at its greatest distance from the Earth (about June 21 or about December 22) |
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| An object in the sky that produces its own light |
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| The star closest to Earth that provides energy for all living things |
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| Dark areas on the Sun's surface that are cooler than the rest of the Sun |
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| An instrument used to detect and observe distant objects in the sky |
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| The rising and falling of the ocean that occurs twice a day; is caused by the gravitational pull of the Moon and Sun |
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| The leaning, or slanting, of the Earth |
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| Everything — Earth, planets, sun, stars, etc — that exists anywhere |
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