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Dark Grey Planet 01 (第2/8页)
nd tains 100,000 gaxies. The Virgo Supercluster is 100 million light-years in diameter and tains 47,000 gaxies. The Local Group of Gaxies is 10 million light-years in diameter and tains 50 gaxies The Andromeda Gaxy is 220,000 light-years in diameter and has 1 trillion stars. The Milky Way is 180,000 light-years in diameter and has 400 billion stars. What is the cept of light year only used units in astronomy are parsecs, astronomical units and light seds An
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