Stars scattered across the cosmos sparkle in the appropriately named Chandelier Cluster.

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

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

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

JWST observations reveal that XLSSC 122 was already unusually massive and centrally concentrated more than 10 billion years ...

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 ...

Astronomers say a dwarf galaxy, left, merged with the primitive Milky Way galaxy about 12 billion years ago. Credit: NASA / ...

Looking somewhat like a swarm of bees returning to their hive, this NASA Hubble Space Telescope image features the galaxy cluster MACS0329-0211. Galaxy clusters like MACS0329-0211 are important ...

NASA's Hubble Space Telescope has uncovered evidence that the young Milky Way swallowed a dwarf galaxy 11.8 billion years ago, reshaping its evolution.

What can heat distribution within galaxy clusters, which often consist of hundreds to thousands of galaxies, teach astronomers about their formation and evolution? This is what a recent study ...

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 ...

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 ...