For more than a decade, astronomers quietly watched the most precise clocks in the cosmos, waiting for a barely perceptible shiver in spacetime. Now, after 15 years of patient measurement, they say ...

The studied galaxy existed about 930 million years ago after the Big Bang. Even though this might sound like a long time ago, in universe terms this is not ...

Astronomers have identified what could be the largest structure ever observed in the known universe—a vast network of galaxy clusters and superclusters containing an astonishing 200 quadrillion solar ...

This stunning image reveals a distant galaxy cluster teeming with energy: galaxies shine in visible light (white), ghostly red clouds unveil a newly discovered radio mini-halo—the most distant ever ...

Discover seven unusual galaxies defying scientific predictions, from impossibly bright early universe objects to astrophysics ...

Astronomers have uncovered a vast cloud of energetic particles—a "mini halo"—surrounding one of the most distant galaxy clusters ever observed, marking a major step forward in understanding the hidden ...