Andromeda (Sirius)

Andromeda, often associated with the constellation and galaxy, is scientifically known as the Andromeda Galaxy, a massive spiral galaxy approximately 2.5 million light-years away from Earth. It’s the closest large galaxy to our Milky Way, containing about a trillion stars. Over billions of years, Andromeda and the Milky Way are expected to collide and merge, forming a new, larger galaxy. While often confused with Sirius, the brightest star in our night sky, Andromeda is a galaxy, and Sirius is a star, both key celestial objects in our universe but vastly different in scale and nature.