What is a galaxy in terms of space?
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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
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GALAXY
A galaxy is a bound system of stars,gas,dust and dark matter.A galaxy is held together by gravity.There are many galaxies besides our,though.Some galaxies are spiral-shaped like ours.Some scientists think there could be as many as one hundred billion galaxies in the universe.
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