.Clusters of superstars set the interstellar tool ablaze in the Andromeda Universe about 2.5 million light-years away. Also referred to as M31, Andromeda is the Milky Way's closest major galaxy. It measures approximately 152,000 light-years across as well as, along with almost the same mass as our home galaxy, is actually headed for an accident with the Milky Way in 2-4 billion years. Meanwhile, Andromeda continues to be a things of research for several stargazers.