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1
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galaxies
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United States
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Studied extensively by astronomers and astrophysicists, and recognized as vast, complex systems of stars, planets, and other celestial matter.
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1
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2
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galaxy
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United States
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Galaxies are studied extensively in astronomy and are a common topic in science education.
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1
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3
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galaxy
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United States
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Galaxies are a subject of interest and exploration in astronomy and space science.
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1
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4
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galaxy
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United States
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Galaxies are a popular subject of study and fascination in astronomy and space exploration.
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1
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5
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milky way
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US
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Fascination and study of the Milky Way as part of astronomy and scientific curiosity
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1
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