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The Milky Way galaxy is a vast grouping of several hundred billion stars, gas, and dust to which the Sun and solar system belong. All the stars visible to the unaided eye in the night sky are a part of this same huge collection. Most of the stars, gas, and dust observed in our galaxy are contained in a thin disk more than 100,000 light-years in diameter, with a lens-shaped bulge at its center. This central bulge, also called the galactic nucleus, contains the greatest concentration of stars... więcej
Salem Press Encyclopedia of Science, 2023. 3p.
