What makes a galaxy?
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Galaxies are composed of stars, dust and dark matter, all held together by gravity. ... Some astronomers think that gravity pulled dust and gas together to form individual stars, and those stars drew closer together into collections that ultimately became galaxies.
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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. ... It's a small part of the Milky Way Galaxy. A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity.
Explanation:
Galaxies are composed of stars, dust and dark matter, all held together by gravity.
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