Pinwheel Galaxy

The Pinwheel Galaxy (also often known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy distanced 21 thousand light-years (six megaparsecs) away within the constellation Ursa Significant, first discovered by means of Pierre M├ęchain in March 27, 1781, and communicated in order to Charles Messier that verified its location for inclusion within the Messier Catalogue united of its last entries.