(astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust. Synonym: galaxy.
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Words linked to "Extragalactic nebula" : aggregation, existence, uranology, creation, world, Milky Way Galaxy, spiral galaxy, Milky Way System, collection, assemblage, Great Attractor, star, Magellanic Cloud, astronomy, universe, macrocosm, accumulation, cosmos, Milky Way, spiral nebula, cosmic dust |
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