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Galaxy and their classification From our school days we know that we live in the Earth, which is in the Solar System and the Solar System is a huge family part of the Milkyway Galaxy. But most of us do not know what the galaxy or the galaxy is? In addition, the galactic galaxy is not the only galaxy in the universe. On the contrary, there are also many large, small and bizarre neighboring galaxies with our galaxy galaxy. Galaxy and their classification Definition of galaxy The word galaxy is related to a huge family of gas, dust, arbor stars and their solar system, which is tied to gravity. The size of the galaxies ranges from a few hundred million stars to the Vaman galaxies to galaxies with large trillions of stars, in which each star revolves around the center of its galaxy. The number of stars in some galaxies is more than the number of sand particles on earth! Classification of Galaxies Based on the visual profile of the galaxy, astronomers classify them in differ...