Galaxies

Latest about Galaxies

a red wisp of gas on a starry background
Strange glowing 'bow-and-arrow' structure may be a giant cosmic shock wave created by a supersonic galaxy collision

By Samantha Mathewson Published

A bizarre "bow-and-arrow" radio galaxy nearly 1.8 million light-years across could reveal how galaxy clusters sculpt some of the universe's largest structures.

2 Comments
Galaxies
a dense field of glowing stars with cloudy wisps of gas scattered throughout
This is the largest and most detailed image of our Milky Way — with over 60 million stars and 50 exoplanet systems

By Robert Lea Published

The ESA's dark universe detective spacecraft Euclid, has studied the heart of the Milky Way, creating the largest and most detailed photo of this region ever made.

Galaxies
An artist’s impression of the galaxy CRISTAL-02, with a huge plume of cold gas extending away from it.
James Webb Space Telescope discovers 'galaxy-killing' wind that may explain why some early galaxies lived fast and died young

By Samantha Mathewson Published

Powerful outflows of gas may explain why so many massive galaxies shut down star formation soon after the Big Bang.

Galaxies
a white spiral-shaped cloud of dots of light on a black background
Do galaxies have a 'kill switch' that makes them stop growing?

By Paul Sutter Published

Above a certain threshold, galaxies stop growing , no matter how much raw material they have on hand. The question is: what flips the switch?

2 Comments
Galaxies
Trouble near the Milky Way: The Large Magellanic Cloud is ripping its smaller neighbor galaxy apart

By Keith Cooper Published

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.

Galaxies
a bright white-blue smudge of gas in a starry night sky
The Milky Way may have devoured another galaxy named Loki, and astronomers think they've found its remains

By Julian Dossett Published

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.

Galaxies
The universe's 'most relaxed' galaxy cluster was shaped by cosmic violence, new study finds

By Sharmila Kuthunur Published

What's the truth behind this unusually tranquil city of galaxies?

Galaxies
Our Milky Way's 'Zone of Avoidance' holds a galaxy supercluster with 30,000 trillion times the sun's mass

By Keith Cooper Published

The Vela Supercluster, in our Milky Way's Zone of Avoidance, is competing gravitationally with other superclusters for the attention of local galaxies.

4 Comments
Galaxies
The James Webb Space Telescope deep field image showing some of the earliest and most distant galaxies ever seen.
Why were galaxies so active in the early universe? We may be getting close to the answer

By Paul Sutter Published

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.

2 Comments
Galaxies
A black background of space is speckled with a wide array of stars. At the center is a flat, glowing galaxy shaped like a stretched out sombrero.
The cosmos wears a galactic sombrero | Space photo of the day for April 29, 2026

By Chelsea Gohd Published

The Sombrero galaxy's name fits perfectly.

Galaxies
1 2 3 4 5 6 7 8 9 Archives