Our Milky Way galaxy is a cannibal. You might wonder what would happen if our disk-shaped spiral galaxy were to one day collide with Andromeda, which is over twice the size of the Milky Way.

A new composite image of the Andromeda Galaxy is offering an unprecedented view of our closest spiral galactic neighbor. Composed by NASA and international space partners, the image combines data from ...

A new composite image of the Andromeda Galaxy is offering an unprecedented view of our closest spiral galactic neighbor. Composed by NASA and international space partners, the image combines data from ...

Astronomers have long believed that our Milky Way will eventually collide with the Andromeda galaxy. A new study suggests that we might escape that fate. The spiral Andromeda galaxy is our closest ...

S targazers are in luck this Wednesday, November 26, as two major cosmic sights will be visible to the unaided eye. The ...

Looking for a sky event this week? Check out our full Sky This Week column. November 22: Titan transits Saturn Andromeda the ...

Someday, the Andromeda Galaxy will merge with our Milky Way – and it won’t be the first time Andromeda has swallowed up another galaxy and kept the stars for itself. The nearby Andromeda Galaxy, like ...

November nights’ best celestial objects are those that are high above the southern horizon and bright along the line of sight of the north/south meridian. This year’s opposition has Jupiter superbly ...

"Beyond the Milky Way lie billions of other galaxies, drifting a few million light years from one another like lily pads floating on the surface of a pond." — Timothy Ferris in Seeing in the Dark A ...

The Milky Way and Andromeda galaxies will collide in about 4 billion years. Most stars will not collide due to vast distances between them. The galaxies' central black holes will eventually merge. Our ...