what is galaxy??
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A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity. A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity.
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Galaxy
Galaxy -
The word galaxy is derived from the Greek galaxias (γαλαξίας), literally "milky", a reference to the Milky Way. Galaxies range in size from ...
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