(Updated Dec. 2017) Also known as M101, the Pinwheel Galaxy is in Ursa Major (the Big Dipper) and about 21 million light years from Earth. It is a spiral galaxy, like the Milky Way, but is unusually asymmetric.  The smaller galaxy on the left side is NGC5474, and there is an even smaller one above M101, NGC5477. Scope: AT111EDT at f/5.7 Mount: AP Mach1GTO Camera: QSI 683 at –20C