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The top documents tagged [galaxiesgalaxiesa galaxy]
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Galaxies. Galaxies A galaxy is a huge region of space that contains hundreds of billions of stars, planets, glowing nebulae, dust, empty space, and possibly
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Galaxies
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Galaxies. A galaxy is made of billions of stars, dust, and gas all held together by gravity. Galaxies are scattered throughout the Universe. They vary
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Galaxies
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