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 ...

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 ...

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

A rare supernova whose light traveled more than 10 billion years to reach Earth is offering astronomers an unexpected opportunity to probe one of cosmology’s biggest mysteries. The explosion, known as ...

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

A single particle cut through the Mediterranean in February 2023 carrying an almost absurd amount of energy. Detected deep ...