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galaxy - (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust; "`extragalactic nebula' is a former name for `galaxy'" |
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aggregation,
accumulation,
assemblage,
collection the act of accumulating
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macrocosm,
cosmos,
existence,
universe,
creation,
world any of various mostly Mexican herbs of the genus Cosmos having radiate heads of variously colored flowers and pinnate leaves; popular fall-blooming annuals
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astronomy,
uranology the branch of physics that studies celestial bodies and the universe as a whole
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spiral galaxy,
spiral nebula a galaxy having a spiral structure; arms containing younger stars spiral out from old stars at the center
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great attractor a massive grouping of galaxies in the direction of Centaurus and Hydra whose gravitational attraction is believed to cause deviations in the paths of other galaxies
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milky way,
milky way galaxy,
milky way system the galaxy containing the solar system; consists of millions of stars that can be seen as a diffuse band of light stretching across the night sky
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star (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior
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cosmic dust clouds of particles or gases occurring throughout interstellar space
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| 2. |
galaxy - a splendid assemblage (especially of famous people) |
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aggregation,
accumulation,
assemblage,
collection the act of accumulating
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