n. a collection of billions of stars and other matter held together by gravity
Other galaxies contain many planets.
Other galaxies contain many planets.
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Starburst galaxies are very luminous.
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How many galaxies are in the universe?
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Clusters of galaxies spangle the cosmos in a remarkably uniform manner.
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The material had a starburst pattern. OR Starburst galaxies are very luminous.
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What does the author say galaxies are like?
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Milky Way; star cluster; star system
subterranean
3 syllables
gal-ax-ies
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