"Discoveries like this are cosmic archaeology, uncovering rare stellar fossils that preserve the fingerprints of the universe ...

A novel theory suggests that the current expansion rate of the universe is not fixed, but was in fact quite different in the ...

The local universe may be expanding more slowly than previously thought, a discovery that could relieve a pesky discrepancy ...

Light released by a distant star does not simply wink out after crossing some threshold of space. In a vacuum, photons keep ...

Cosmic voids may seem like the emptiest places in the universe, stripped of matter, radiation, and even dark matter. But they’re far from nothing. Even in these vast empty regions, the fundamental ...

Gravity is by far the weakest of nature’s four fundamental forces, and physicists have spent decades asking a deceptively ...

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.

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

A century ago, Edwin Hubble began the race to the edge of the cosmos Damond Benningfield In 1930, Albert Einstein met with astronomers (including Edwin Hubble, at Einstein's left, back row) at Mount ...

Mysterious blasts of radio waves from across the universe called fast radio bursts help astronomers catalog matter. ESO/M. Kornmesser, CC BY-SA Chris Impey, University of Arizona If you look across ...

On Christmas Day 2021, alongside other astronomers, I watched the James Webb Space Telescope (JWST) launch from French Guiana and begin its month-long journey to its destination, 1.5 million ...