Cosmology

Scientists debate what the future of the cosmos looks like and whether space will ever stop getting bigger and bigger

Voracious black holes feeding on matter in the early universe display the curious spacetime phenomenon known as time dilation

New research pokes holes in the idea that the cosmos expanded and then contracted before beginning again

A new way to gauge the universe’s expansion rate has delivered a confusing result that may conflict with previous related measurements

Scientists have new evidence about how cosmic cataclysms forge gold, platinum and other heavy members of the periodic table

Researchers are convinced the James Webb Space Telescope has glimpsed an unexpected population of galaxies in the early universe. Now they’re trying to decide what this means for our understanding of the cosmos

Growing swarms of spacecraft in orbit are outshining the stars, and scientists fear no one will do anything to stop it

The James Webb Space Telescope’s first images of the distant universe shocked astronomers. Is the discovery of unimaginably distant galaxies a mirage or a revolution?

Decades of work, $10 billion in spending and nearly 14 billion years of cosmic history have brought us to this moment: the first science from the largest and most powerful observatory ever built.

THESAN—the largest, most detailed computer model of the universe’s first billion years yet made—is helping set expectations for observations from NASA’s James Webb Space Telescope

Data from the CHIME radio observatory are a milestone in the quest to discover the hidden origins of universal structure

A research team finds seven tiny dwarf galaxies stripped of their dark matter that nonetheless persisted despite the theft.