The supermassive black holes at the centers of the Milky Way and Andromeda galaxies are doomed to engulf each other in an ill-fated cosmological dance. Astronomers have long known that Andromeda is on ...

The Andromeda galaxy, also known as Messier 31 (M31), is the closest spiral galaxy to the Milky Way at a distance of about 2.5 million light-years. Astronomers use Andromeda to understand the ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. When will the Milky Way collide with the Andromeda Galaxy?

Over half of the 88 official constellation names are attributed to the ancient Greeks. The International Astronomical Union governs the naming of these star-formed “patterns.” The first known ...

The Hubble Space Telescope has captured an amazing 1.5 billion-pixel photo of the Andromeda Galaxy. The picture represents the sharpest and largest composite image of the Milky Way's galactic neighbor ...