Galaxies Collide

The Bullet Cluster (1E 0657-56) consists of two colliding clusters of galaxies.

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When Galaxies Collide: Twin Quasars Blaze Bright at “Cosmic Noon”

When two galaxies collide they often stop making new stars

Here’s a Sneak Preview of What It’ll Look Like When the Milky Way and Andromeda Galaxies Collide

New research could help explain how galaxies might be able to exist without dark matter, which was once thought impossible. Researchers report how, when tiny galaxies collide with bigger ones, the bigger galaxies can strip the smaller galaxies of their dark matter.

This is what happens when galaxies collide, a waltz spanning two billions years visualized with a supercomputer simulation. Credit: NCSA, NASA, B. Robertson, L. Hernquist

When Galaxies Collide, Black Holes Don’t Always Get the Feast They Were Hoping for