Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...

Astronomers are increasingly finding planets that do not simply circle their stars in neat, clockwork ellipses but instead trace out paths that look more like intricate choreography. The latest ...

In the leading model of cosmology, most of the universe is invisible: a combined 95% is made of dark matter and dark energy.

New mapping of the Milky Way has uncovered a vast family tree of stellar siblings, revealing that hundreds of star clusters ...

Astronomers located hyperactive fast radio bursts to a faint dwarf galaxy orbiting a larger companion 2 billion light-years ...

The James Webb Space Telescope (JWST) is allowing astronomers to examine distant galaxies in the far reaches of the early universe for the first time. Some of these have chemical signatures that seem ...

Astronomers have achieved the first confirmed detection of a coronal mass ejection (CME) originating from a star other than our Sun, a phenomenon previously only inferred in exoplanetary contexts.

Determining the "loudest recorded sound" depends on how you define sound and on which measurements you choose to include.