See amazing views of colliding galaxies NGC 520 and barred galaxy IC 4212 in imagery from the Siena Galaxy Atlas. Credit: ...

Astronomers now believe the Milky Way's "inevitable" collision with a neighboring galaxy is much less likely than originally ...

NASA has released a new composite image of two spiral galaxies, NGC 2207 and IC 2163, as they begin a multi-billion-year process of merging into a single celestial entity.

Astronomers combined data from NASA’s JWST and Chandra X-ray Observatory to create a stunning new image of two merging spiral galaxies ...

The Champagne Cluster is a rare and beautiful example of two galaxy clusters smashing together. Its festive name comes from both its New Year’s Eve discovery and its bubbly appearance in space. Images ...

Webb and Chandra reveal two spiral galaxies after an encounter, exposing heated gas, newborn stars and distorted arms, while hinting how the meeting will reshape them over billions of years.