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Hubble's Dwarf Galaxy Stellar Treasure Trove


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Seen here in green and infrared wavelengths, NGC 5477 is a beautiful, glittering cluster of stars. It’s a dwarf irregular galaxy located 20 million light-years away within the Messier 101 group, a loose gathering of galaxies in the constellation Ursa Major (part of which includes the asterism of the Big Dipper, or Plough.) The group is dominated by Messier 101 — the Pinwheel Galaxy, an enormous spiral galaxy 70 percent bigger than the Milky Way.


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