Researchers created a technique to reduce uncertainty in cosmic birefringence measurements, resolving a key phase ambiguity and improving future studies of fundamental physics.

The night sky deceives us. The universe should be ablaze with starlight, yet it isn’t. Discover how the finite speed of light, cosmic expansion, and invisible radiation from the Big Bang—the Cosmic ...

Deep canyons in the Andes are the perfect location to catch the most energetic particles in the universe. Carlos ...

Two new studies have measured the expansion of the universe in our immediate cosmic neighborhood using a novel method that ...

From 19 to 22 January, 80 particle physicists, astronomers and cosmologists gathered at CERN for the first “All that ...

The oldest stars in the Milky Way are forcing a fresh look at one of cosmology’s biggest arguments. If some of them are about ...

A new three-volume study explores how quantum physics, gravitation and cosmology may be understood within a unified ...

A provocative Joe Rogan clip asking a cosmic question: "Do You Think We Are Able To See Past?" Joe explains how light from ...

Ripples in the fabric of space-time called gravitational waves may be the key to solving the Hubble tension — one of the biggest nagging problems in physics.

Three years ago, in the waters of the Mediterranean Sea, the passage of an "ultra-energetic" cosmic neutrino was observed—the ...

For decades, astronomers wondered why most nearby galaxies are speeding away from the Milky Way instead of being pulled in by its gravity. New simulations reveal the answer: our galaxy sits in a ...

Observations show the universe appears flat, yet its true size and global shape beyond the observable horizon may remain forever unknown.