NOUN
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(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'
How To Use extragalactic nebula In A Sentence
- Extragalactic nebula is invisible to the naked eye.
- extragalactic nebula
- `extragalactic nebula' is a former name for `galaxy'