The milky way is a Spiral Galaxy -
After 75 years of research, radio, infrared and even x-ray telescopes have confirmed their existence, and found that the spiral cloud extends 100000 light-years (the diameter of the disk), with a thickness of 1000 light-years (the thickness of the disk). On this gorgeous disk, our tiny solar system lies on the inner edge of an arm, about 25000 light-years from the center.
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