Dart Board Galaxy
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The Dart Board Galaxy (Messier 101a) is a face-on dartboard-type galaxy 21 million light-years (6.4 megaparsecs) away from Earth in the constellation Ursa Pseudo.
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- Pinwheel Galaxy @ Wikipedia - (also known as Messier 101, M101 or NGC 5457) - a face-on spiral galaxy 21 million light-years (6.4 megaparsecs) away from Earth in the constellation Ursa Major. It was discovered by Pierre Méchain in 1781 and was communicated that year to Charles Messier, who verified its position for inclusion in the Messier Catalogue as one of its final entries.