The Andromeda Galaxy, also known as M31, is the nearest major galaxy to the Milky Way. Located about 2.5 million light-years away, it contains a trillion stars and is the largest galaxy in our local group. Scientists believe Andromeda and the Milky Way will eventually collide.
Visible to the naked eye in dark skies, Andromeda offers astronomers a glimpse into galactic evolution. It shares similar structures with our own galaxy, making it a key target for space research. Future missions may help unlock the mysteries of its black hole and star clusters.