Pinwheel Galaxy

Introduction
The Pinwheel Galaxy, also known as Messier 101, M101 and NGC 5457, is located inside The Ursa Major Constellation(Big Bear Constellation or Big Dipper). Messier 101 is a Spiral Galaxy that is 170,000 Light Years in diameter and a mass of around 1000 Billion Solar Masses. The Pinwheel Galaxy is 21 Million Light Years from Earth. In August 2011, A Type 1A Supernova was discovered inside of The Pinwheel Galaxy who was named SN 2011fe.
Profile of M101
The Pinwheel Galaxy was discovered in 1781 by French Astronomer Pierre Méchain who gave it the description, Nebula without a Star. Messier 101 has around 1 trillion stars within its parameters. Other name for The Pinwheel Galaxy are UGC 8981, PGC 50063 & Arp 26. The tidal forces of neighbor galaxies which are NGC 5204, NGC 5474, NGC 5477, NGC 5585 & Holmberg V, make Messier 101 asymmetrical and causes compressed INterstellar Hydrogen Gas which in turn births new stars. The Pinwheel Galaxy is around 21 Million Years.