Question

what do mean by galaxy?​

Answer 1

Answer:

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Explanation:

A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle. When you look up at stars in the night sky, you're seeing other stars in the Milky Way.

Answer 2

Answer:

A galaxy is a huge collection of gas,and billion of stars and their solar system. A galaxy is held together by gravity.