Cosmology

Several branches of modern physics, including quantum theory and cosmology, suggest our universe may be just one of many

A new catalog of more than 12,000 galaxy clusters is helping scientists better understand the universe’s clumpiness, dark energy and some of the smallest particles in the cosmos: neutrinos

Some of the faintest objects ever observed suggest that small galaxies were responsible for clearing the “fog” pervading the early cosmos

Huge empty areas of the universe called voids could help solve the greatest mysteries in the cosmos

Alaska’s rusting rivers, einstein tiles and the new science of asexuality

A quarter of a century after detecting dark energy, scientists are still trying to figure out what it is

Several unexplained measurements are threatening to upend scientists’ understanding of the universe’s origin and fate

The darkness of the night sky offers a profound insight on the nature of the cosmos

A surprisingly complex galaxy cluster suggests that in the search for dark matter, nothing is as simple as it seems

This enormous structure could help explain processes close to the dawn of time—or it could be a random cosmic fluke

Physicist John Cardy and his colleague just won the 2024 Breakthrough Prize in Fundamental Physics. We spoke with Cardy about conformal field theory, 2D black holes and coffee filters

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