But only one galaxy stands out as the most important nearby stellar island to our Milky Way—the magnificent Andromeda galaxy (Messier 31). It can be seen with the naked eye on a very clear ...

His remark holds true now, nearly half a decade later. At 2.5 million light-years away, the Andromeda Galaxy—officially called Messier 31—is the farthest object visible to the naked eye.

The Hubble Space Telescope has produced the most comprehensive survey of the Andromeda galaxy, revealing new clues about its history. The Hubble survey, assembled from over 1,000 orbits and ...

Below is a panoramic photo of the Andromeda Galaxy released by NASA. However, the resolution of the original image is very large, at 42208 x 9870 pixels (748.98 MB). The first panoramic ...