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 ...

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?

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A collision between ...

(CNN) -- Astronomers predict that in about four billion years, the Andromeda galaxy will collide with our own galaxy, the Milky Way. The Andromeda galaxy is our largest and closest neighbor in the ...

There’s more to galaxies than meets the eye, and now astronomers have mapped out a huge invisible region of the galaxy next door. Observations by the Hubble Space Telescope have detailed the size and ...

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 ...