Cosmic dawn galaxies seen by JWST reveal hidden clues about dark matter and keep rival theories about its true nature alive.

“Our latest discovery helps solve a 20-year cosmic mystery,” co-lead author Daniel Whalen from the University of Portsmouth's ...

Approximately 424 million light-years away, a vast chunk of the cosmic web (the network-like distribution of matter the ...

The universe is filled with mysterious occurrences that humans still cannot understand. In the year 2025, scientists came across some strange cosmic objects and events that defied explanation. Some of ...

Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand ...

"We might lose the ability to observe about 30% of the faintest galaxies. We are at the point of starting to be able to see ...

Astronomers have employed NASA's Chandra spacecraft to perform X-ray observations of a massive galaxy cluster known as SPT-CL ...

Most scientists agree the prolonged flash likely occurred when a black hole ate a star, but two other ideas can't be ruled ...

The X-ray Imaging and Spectroscopy Mission (XRISM), a Japan Aerospace Exploration Agency (JAXA) and NASA collaboration with ...

The James Webb Space Telescope has found compelling evidence for "monster stars" — gigantic, primordial stars that existed in the early universe.

A never-before-seen blast from a supermassive black hole was spotted by two sophisticated X-ray space telescopes. This giant ...

X-ray space telescopes caught a supermassive blackhole flinging matter into space at a fifth of the speed of light ...