[/caption] The distance to the Andromeda Galaxy is 2.54 million light-years, or 778 kiloparsecs. The Andromeda Galaxy can be seen with the unaided eye, so skywatchers have been observing it for thousands of years. Charles Messier cataloged it as M31 in his 1764 list. Back then, astronomers thought that Andromeda was a nebula, and based … Continue reading "Distance to Andromeda"