Star formation has ceased within at least 16 million light-years of the quasar. A similar phenomenon may have fried the Milky Way when it was young.

Black holes don't have many identifying features. They come in one color (black) and one shape (spherical). The main ...

Early quasars had well-stocked larders Quasars are among the brightest sources of light in the known universe, often outshining the combined light of every star in the galaxies surrounding them.

DECam's specialized filter allowed the team to count the number of companion galaxies around the quasar by detecting a very specific type of light they emit, known as Lyman-alpha radiation.

Astronomers witnessed two galaxies engaged in an intense deep-space battle for the first time. Watch the “cosmic joust” in action.

There could be many more satellite galaxies orbiting the Milky Way than previously thought or observed, according to ...

“For instance, one quasar has almost 50 galaxies around it, while another has just two. And both quasars are within the same size, volume, brightness, and time of the universe.

The James Webb Space Telescope has discovered lonely quasars in the early universe, with "empty larders" that defy theories surrounding their growth to monster sizes.

“For instance, one quasar has almost 50 galaxies around it, while another has just two. And both quasars are within the same size, volume, brightness, and time of the universe.

Using the Dark Energy Camera, astronomers discovered that black-hole-powered quasars in the early universe lived in dense neighborhoods, but were "bad neighbors." ...

The team behind this research found quasars are "noisy neighbors" blasting out radiation that can cut off star formation, thus "killing" galaxies that live in their close cosmic neighborhoods. As a ...