This idea is called the big bang model—which is an unfortunate name because it brings to mind a cosmos expanding like an ...

WASHINGTON, Jan 30 (Reuters) - Observations by NASA's James Webb Space Telescope and Chandra X-ray Observatory are providing ...

The young galaxy cluster existed about 12.8 billion years ago and has an estimated mass 20 trillion times that of the sun ...

Most of the universe is slipping away from the Milky Way, carried outward as space itself expands. Yet one giant neighbor is bucking the trend, racing straight at us while almost every other major ...

Neutrino particles have extremely small masses, yet there are so many of them that they carve out the large-scale structure ...

Dark matter doesn't absorb or give off light so scientists can't study it directly. But they can observe how its gravity warps and bends the star stuff around it.

Two ways of measuring how fast the universe is expanding disagree, a puzzle known as the Hubble tension. Tiny magnetic fields from the Big Bang may offer a solution.

A flat plane of dark matter beyond the Local Group may explain why nearby galaxies move away from us instead of falling ...

Astronomers from the University of Tokyo and other institutions have utilized the James Webb Space Telescope (JWST) to study ...

"There is a growing chasm between theory and observation related to the early universe, which presents compelling questions ...

The James Webb Space Telescope has detected the most distant galaxy ever observed, MoM-z14, offering new insight into star formation and galaxy growth in the early universe ...