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FinalFrontier: The Largest Galaxy in the Known Universe [IC 1101]

IC 1101 is a supergiant elliptical galaxy at the center of the Abell 2029 galaxy cluster, approximately 320 megaparsecs (1.04 billion light-years) from Earth. Astronomers have measured the galaxy’s diameter at 100,000 light years, at least 60 times the size of the Milky Way.