Galaxies

Scientists may have spotted two pairs of merging dwarf galaxies, each pair with a duo of soon-to-collide black holes

JWST has discovered giant mature galaxies that seem to have filled the universe shortly after the big bang, and astronomers are puzzled

These merging supermassive black holes are among the closest ever observed and could help unlock deeper secrets of cosmic history

The IceCube observatory has detected neutrinos from an active galaxy for the first time, revealing clues about how supermassive black holes gobble matter

Two giant telescopes—one in Australia, the other in South Africa—will comprise the supersensitive Square Kilometer Array

Researchers are convinced the James Webb Space Telescope has glimpsed an unexpected population of galaxies in the early universe. Now they’re trying to decide what this means for our understanding of the cosmos

Growing swarms of spacecraft in orbit are outshining the stars, and scientists fear no one will do anything to stop it

Revised calibrations for the James Webb Space Telescope’s instruments are bedeviling researchers studying the distant universe

A controversial new theory suggests the Milky Way galaxy’s arms sent comets hurtling toward early Earth, where impacts built new continental crust

The James Webb Space Telescope’s first images of the distant universe shocked astronomers. Is the discovery of unimaginably distant galaxies a mirage or a revolution?

“Decolonizing” the search for extraterrestrial intelligence (SETI) could boost its chances of success, says science historian Rebecca Charbonneau

Webb sees through dust and gas into regions out of reach of optical telescopes such as Hubble, revealing new galaxy views