Last month, the European Space Agency (ESA) released a huge dataset from its space telescope Euclid. The release featured three deep-field mosaics glittering with 380,000 galaxies and hundreds of ...

When it comes to the Milky Way and Andromeda galaxies, there’s a whole “will they or won’t they” thing going on. In 2012 ...

Understanding how galaxies grow has long stood as one of astronomy’s core challenges. Over time, scientists have gathered evidence that galaxy mergers matter. When two galaxies move close, gravity can ...

A whole universe of hidden galaxies lies just beyond what the eye can see. Thanks to a new generation of space telescopes, astronomers are now revealing these distant, dim worlds—some no bigger than a ...

At the heart of the constellation Cetus, a supermassive black hole is devouring gas and lighting up a galaxy from the inside ...

This image shows an area of Euclid’s Deep Field South. The area is zoomed in 16 times compared to the large mosaic. ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre, E. Bertin, ...

Galaxies like the Milky Way grow by merging with smaller galaxies over billions of years, unlike dwarf galaxies, which have long been thought to lack the heft to attract mass and grow in the same way.

The James Webb Space Telescope (JWST) has uncovered a pair of dwarf galaxies with black holes that defy conventional understanding. These black holes, located in galaxies with masses far smaller than ...

Tiny galaxies orbiting the Milky Way may hold clues to one of cosmology’s biggest mysteries. Ultra-faint dwarf galaxies are ...

Scientists say it's the earliest galaxy seen doing this (so far). When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Astronomers have caught an ...

A newfound object uncovered in the early universe by NASA’s James Webb Space Telescope (JWST) is challenging long-held ideas about how galaxies form. Dubbed the “Big Wheel,” it’s a galaxy much like ...

Nearly all stars are found inside or around galaxies, because that’s where the conditions are right for stars to form. Within galaxies, stars form inside cold, dense molecular gas clouds like those ...