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

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

Astronomers used James Webb Space Telescope data to determine the density of the universe's most mysterious "stuff." ...

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

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 ...

For many years, scientists have tried to understand how the Milky Way is positioned in space, and how it moves together with ...

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.

Discover seven unusual galaxies defying scientific predictions, from impossibly bright early universe objects to astrophysics ...

"JADES-ID1 is giving us new evidence that the universe was in a huge hurry to grow up." ...

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 ...

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.

By measuring the galaxy’s redshift, the scientists behind the discovery were able to confirm that its light has been ...