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NGC 4051 is a spiral Sifert galaxy in the constellation Ursa Major, at about 48 Mly from earth. It covers about 5 x 4 arcminutes of the night sky The core of this galaxy contains a supermassive black hole.

Data from the Liverpool Telescope, La Palma (2 m aperture and 0.28 "/pixel resolution)


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    • By stevewanstall
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