 extragalactic_nebula |
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| 1. | [ noun ] (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust | |
| Synonyms: | galaxy | |
| Examples: | "`extragalactic nebula' is a former name for `galaxy'" |
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| Related terms: | collection Magellanic_Cloud great_attractor spiral_galaxy Milky_Way universe universe star cosmic_dust astronomy | |
