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Messier 108

Galaxy in Ursa Major · 46 million light-years

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TypeGalaxy
ConstellationUrsa Major
Distance46 million light-years
Apparent magnitude10.1
Apparent size4′ (arc-minutes)
Also known asM108 · NGC 3556
Messier 108 is a galaxy (also catalogued as NGC 3556) in the constellation Ursa Major — an island of billions of stars far beyond our own Milky Way. It was recorded by Charles Messier in his famous catalogue of 110 deep-sky objects. It spans roughly 4 arc-minutes on the sky. At about magnitude 10.1, it shows up well in a small backyard telescope.

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