The Pinwheel Galaxy (M101)

Origin of name and discoverer The Pinwheel Galaxy, also known as M101 and NGC 5457, is a Messier object, discovered in 1781 by the French astronomers Charles Messier and Pierre Méchain. It is the 101st object in the Messier catalog: a list of 110 non-comet diffuse astronomical objects that Charles Messier created in 1774 to […]