The Andromeda Galaxy, also known as Messier 31, is a spiral galaxy approximately 2.5 million light-years from Earth, and the nearest major galaxy to the Milky Way. On a moonless night, from a dark site it can be seen with the naked eye.
The Andromeda Galaxy, also known as Messier 31, is a spiral galaxy approximately 2.5 million light-years from Earth, and the nearest major galaxy to the Milky Way. On a moonless night, from a dark site it can be seen with the naked eye.