New observations reveal that the relationship between ultraviolet and X-ray light in quasars has changed over billions of ...

Gravitational wave astronomy is starting to do more than confirm Einstein’s equations. It is turning into a precision tool ...

Black holes are among the most fascinating and enigmatic objects in the universe. Born from collapsed stars and governed by ...

But the Big Bang theory predicts that about 5% of the universe's contents should be atoms made of protons, neutrons and ...

Black holes are dark, matter-devouring balls of gravity. Most of them are so far away that we don't need to worry about them. But not this one. Meet Gaia BH1. This enormous black hole sits right ...

Distance records are an excellent proxy for the state of the art in astronomy. Finding extremely faraway galaxies is hard. In ...

The FLAMINGO super simulation maps the universe from its earliest moments but finds galaxies cluster less than cosmological ...

FLAMINGO simulation maps the universe but reveals a puzzling mismatch: galaxies cluster less than theory predicts.

What's the size of the Milky Way galaxy? Learn how, depending on your definition, the size can change.

One story rose above all the others — new and older telescopes are putting us on the cusp of monumental discoveries about our universe.

Dustin Henderson and the rest of the squad in Stranger Things get a pretty decent briefer on wormholes by his science teacher ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...