Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5447  ·  NGC 5449  ·  NGC 5450  ·  NGC 5451  ·  NGC 5453  ·  NGC 5455  ·  NGC 5457  ·  NGC 5461  ·  NGC 5462  ·  NGC 5471  ·  NGC 5473  ·  NGC 5474  ·  NGC 5477  ·  Pinwheel galaxy
Pinwheel Galaxy (M101), schmaks
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Pinwheel Galaxy (M101)

Pinwheel Galaxy (M101), schmaks
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Pinwheel Galaxy (M101)

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Description

The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy distanced 23 million ly light-years (six megaparsecs) away in the constellation Ursa Major, first discovered by Pierre Mechain on March 27, 1781, and communicated to Charles Messier who verified its position for inclusion in the Messier Catalogue as one of its final entries.

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