Astronomers have detected an enormous cloud of gas tens of millions of degrees hot surrounding one of the most extreme ...

The earliest example of the Milky Way cannibalising a smaller galaxy for its growth involved a cosmic meal that left a scar ...

The Milky Way absorbed a large dwarf galaxy about 12 billion years ago, pushing the known history of major galactic mergers ...

Hubble observations reveal that the Milky Way absorbed a massive dwarf galaxy 12.3 billion years ago, reshaping its earliest ...

A galaxy simulation shows that nuclear star clusters and nuclear stellar disks can grow together as a stellar bar funnels gas ...

Today's Image of the Day from NASA’s Hubble Space Telescope captures a crowded region of deep space. Galaxies gather in enormous clusters, stars shine sharply in the ...

Using ESA's Gaia satellite and NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers from the Ege University in Turkey and elsewhere have observed a galactic open cluster known as NGC 2506.

The blue ribbon for largest known galaxy goes to a behemoth that probably grew by cannibalizing its smaller neighbors. Known as IC 1101, the galaxy’s diameter is estimated to be a whopping 520 ...

Roughly 2.8 billion light-years from Earth, two galaxy clusters are engaged in a cosmic tussle. These enormous structures last collided about a billion years ago, but now, it appears they’re going ...

Using the Anglo-Australian Telescope (AAT), astronomers have observed a nearby galactic globular cluster known as NGC 6569. Results of the observational campaign, published December 22 on the arXiv ...

Astronomers studying a distant galaxy cluster stumbled upon ancient radio signals that might hold clues to the formation of the early universe. While studying the distant galaxy cluster known as ...

Current theories say young galaxy clusters should be relatively cool compared to older ones. But researchers recently found a very young cluster that was shockingly hot. Study author Dazhi Zhou says ...