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galaxy


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A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction; the Galaxy, the galaxy of which the solar system is a part, the Milky Way; in figurative usage, a large or impressive group of people.

The name is recorded from Middle English, referring to the Milky Way, and comes via Old French and medieval Latin from Greek galaxias (kuklos) ‘milky (vault)’, from gala, galakt- ‘milk’.

Subjects: Astronomy and Astrophysics.


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