Do galaxies have a ‘kill switch’ that makes them stop growing?
Above a certain threshold, galaxies stop growing , no matter how much raw material they have on hand. The question is: what flips the switch?
Trouble near the Milky Way: The Large Magellanic Cloud is ripping its smaller neighbor galaxy apart
The Magellanic Clouds are a pair of dwarf galaxies passing the Milky Way probably for the first time, but as they move they have been interacting with each other for billions of years.
The Milky Way may have devoured another galaxy named Loki, and astronomers think they’ve found its remains
Astronomers say that they have identified 20 stars that may have grown up together in a dwarf galaxy named "Loki" that eventually became part of our Milky Way.
The universe’s ‘most relaxed’ galaxy cluster was shaped by cosmic violence, new study finds
What's the truth behind this unusually tranquil city of galaxies?
Our Milky Way’s ‘Zone of Avoidance’ holds a galaxy supercluster with 30,000 trillion times the sun’s mass
The Vela Supercluster, in our Milky Way's Zone of Avoidance, is competing gravitationally with other superclusters for the attention of local galaxies.
Why were galaxies so active in the early universe? We may be getting close to the answer
Early galaxies were star-forming machines, gobbling up gas and spitting out stars with a furious intensity. A new model helps explain why things were so different back then.
The cosmos wears a galactic sombrero | Space photo of the day for April 29, 2026
The Sombrero galaxy's name fits perfectly.
Help scientists find spacetime warps in these Euclid Space Telescope images
A new citizen science project invites the public to scan never-before-seen images from the Euclid Space Telescope in search of galaxies bending spacetime.
Backyard snapshot delivers stunning galaxy image | Space photo of the day for April 27, 2026
The Small Magellanic Cloud, a neighbor of our Milky Way galaxy, stuns in this ambassador's picture.
‘Dark subhaloes’ may explain why galaxies seem to form pre-determined shapes
Our universe is full of mysteries, but few are as perplexing as the dark, tiny galaxies that hover around larger ones like the Milky Way.