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extragalactic nebula

DEFINITIONS OF: extragalactic nebula

1

n (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'”
Synonyms:
galaxy
Examples:
Magellanic Cloud
either of two small galaxies orbiting the Milky Way; visible near the south celestial pole
Types:
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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
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
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
Andromeda galaxy
a spiral galaxy in the constellation of Andromeda that is visible to the naked eye
Type of:
accumulation, aggregation, assemblage, collection
several things grouped together or considered as a whole
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