The Pinwheel Galaxy Messier 101 (NGC 5457) in the constellation Ursa Major (Big Dipper). At lower right are the galaxies NGC5174 and PGC4545422.

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Photo credit: © Alf Jacob Nilsen / Alamy / Afripics
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Keywords: 101, astronomi, astronomy, deep, face-, galakser, galaxies, galaxy, m101, messier, ngc5174, ngc5457, pgc4545422, pinwheel, space, spinneteingalaksen, spiral, spiralgalakse