Take a tour of the Hydra I galaxy cluster. A galaxy in the region, NGC 3312, is "losing cold gas as it moves through the hot ...

A sweeping cosmic census from the James Webb Space Telescope has unveiled nearly 1,700 galaxy groups—marking the deepest and ...

Astronomers discover more than 100 hidden black holes in a star cluster, revealing surprising movements in ancient galactic ...

A study published in Astronomy & Astrophysics has identified four previously unknown primordial open cluster (OC) groups in ...

Scientists using the XRISM satellite have uncovered a major clue to one of astronomy’s longstanding mysteries: why galaxy ...

Astronomers have explained how a galaxy cluster maintains its heat, despite emitting X-rays that cool the hot gas at its center. The group discovered the existence of a fast-moving, high-temperature ...

NASA Chandra X-ray telescope data from galaxy cluster Abell 2146 showed a "shockwave that stretches for some 1.6 million ...

The image took nine snapshots and 120 hours of observing time; it is currently the longest exposure yet from JWST. As the ...

In 1987, an enormous blue arc, thought to be hundreds of trillions of miles long, was first considered one of the largest ...

Finally, in April 2025, MISTRAL delivered stunning images of the supernova remnant Cassiopeia A (Cas-A), one of the sky’s ...

The JWST has done it again. The powerful space telescope has already revealed the presence of bright galaxies only several ...

Now gather a few hundred billion stars and star clusters together, and you’ve got an immense structure known as a galaxy. The galaxy in which our star — the sun — resides is the Milky Way, so named ...