The Andromeda Galaxy – Messier’s M31 – has an almost romantic appeal. It is the most distant object and the only extragalactic object that is visible to t

The Andromeda Galaxy, or M31, is an attractive galaxy for astronomers. It is close to us, it is of about the size of our galaxy, it provides some intriguing obs

Tour the incredible scope of the cosmos as we know it with the editor in chief of Astronomy, featuring jaw-dropping illustrations and full-color photography fro

Prior to the 1920s it was generally thought, with a few exceptions, that our galaxy, the Milky Way, was the entire Universe. Based on the work of Henrietta Leav

A thought provoking study of the powerful impact of images in guiding astronomers' understanding of galaxies through time.