what is galaxy ???????????
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a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
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Explanation:
A galaxy is a sprawling space system which is composed of stars, dust, interstellar gas, stellar remnants, and dark matter and all held together by gravity. ... The universe has many galaxies, and each carries millions of stars which are bounded by a unique force known as gravitational force.
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