what is universe also 2hat is galaxy
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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. Some scientists think there could be as many as one hundred billion galaxies in the universe....!
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galaxy is a huge collection of gas, dust, and of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a in the middle.
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