The most luminous galaxy ever discovered is cannibalizing not one, not two, but at least three of its smaller neighbors The material that the galaxy is stealing from its neighbors is likely ...

Long ago, in a galaxy 600 million light years from Earth, a star got too close to a massive black hole and was torn apart. This image combines observations of the tidal disruption event obtained in ...

A common belief among astronomers is that galaxy groups and clusters differ mainly in the number of galaxies they contain—there are fewer galaxies in groups and more in clusters. Led by Maret Einasto, ...

Using the ALMA telescope in Chile, an international research team examined seven pairs of merging galaxies to come to the ...

Astronomers know that mergers play a huge role in galaxy growth. Right now, the Milky Way is slowly consuming the Large and Small Magellanic Clouds. The evidence is a stream of gas called the ...

The Gemini North telescope team released footage of galaxy NGC 4449 to celebrate the observatory's 25th anniversary. When you purchase through links on our site, we may earn an affiliate commission.

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

Astronomers searching for massive black holes shredding stars found one in an unusual place -- 2,600 light years from the core of a galaxy. The roque black hole may be from an earlier merger with ...