.Sets of stars established the interstellar medium ablaze in the Andromeda Galaxy about 2.5 thousand light-years away. Likewise referred to as M31, Andromeda is the Milky Way's closest major universe. It measures roughly 152,000 light-years across and, along with practically the exact same mass as our home galaxy, is actually headed for a crash with the Galaxy in 2-4 billion years. For the time being, Andromeda continues to be an object of study for many astronomers.