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

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

Scientists have confirmed that colossal collisions between galaxies trigger titanic eruptions in the centers of those ...

Supernovae aren't one of the JWST's main science themes, but the perceptive telescope is full of surprises. Recently, it ...

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

Astronomers from several nations found fourteen hydrogen-rich galaxies placed along a narrow stretch over 5.5 million ...

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

A faint, tiny flash of red light glimpsed at the Cosmic Dawn more than 13 billion years ago has smashed the record for the ...

NASA’s James Webb Telescope may have detected the universe’s first stars, Pop III stars, in galaxy LAP1-B, offering a glimpse into cosmic history.

NASA has completed assembly of the Nancy Grace Roman Space Telescope, preparing for final testing and launch by May 2027 to ...

"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 ...

Direct chemical signatures in a distant galaxy captured by JWST confirm the presence of massive primordial stars, resolving ...