HyperDic: extragalactic_nebula

English > 1 sense of the expression extragalactic nebula:
NOUNgroupextragalactic nebula, galaxy(astronomy) a collection of star systems
English > extragalactic nebula: 1 sense > noun 1, group
Meaning(astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust.
Example"'extragalactic nebula' is a former name for 'galaxy'"
Synonymgalaxy
Categoryastronomy, uranologyThe branch of physics that studies celestial bodies and the universe as a whole
InstancesMagellanic CloudEither of two small galaxies orbiting the Milky Way
Member ofuniverse, existence, creation, world, cosmos, macrocosmEverything that exists anywhere
Membersstar(astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior
NarrowerGreat AttractorA 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
Milky Way, Milky Way Galaxy, Milky Way SystemThe galaxy containing the solar system
spiral galaxy, spiral nebulaA galaxy having a spiral structure
Broadercollection, aggregation, accumulation, assemblageSeveral things grouped together or considered as a whole
Substancescosmic dustClouds of particles or gases occurring throughout interstellar space
Spanishgalaxia, nebulosa
Catalangalàxia, nebulosa

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