For the past decade, scientists have been trying to get to the bottom of what seemed like a major inconsistency in the ...

Black holes continue to grip our imagination. These cosmic powerhouses twist space and time so intensely that even light ...

A massive barred spiral galaxy from the early Universe has stunned astronomers by forming stars at 300 times the rate of the ...

A distant galaxy, invisible for billions of years, has reappeared in a surprising form thanks to a rare cosmic illusion ...

In 1987, an enormous blue arc, thought to be hundreds of trillions of miles long, was first considered one of the largest objects ever detected in space. The arc was discovered near the galaxy cluster ...

The new image shows one galaxy piercing another with intense quasar radiation. Astronomers likened the violent galaxy ...

The record-breaking galaxy is revealing secrets about the first stars and their unexpected chemical fingerprints.

Deciphering the universe’s secrets is partly done through observation, but just as important are solid models of the forces ...

Astronomers witnessed two galaxies engaged in an intense deep-space battle for the first time. Watch the “cosmic joust” in action.

On what might have been the proudest day of Jack Burns’s long career in astronomy, he was sitting on a beach. Orbital ...

Such a mission could let researchers peer through all the light there is, all the way back to the universe’s very first light ...