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Quasars, the brightest objects in the cosmos, could act as cosmic signposts, directing astronomers to elusive pairs of supermassive black holes. New research suggests that quasars — the luminous ...

Stephanie LaMassa did a double take. She was staring at two images on her computer screen, both of the same object — except they looked nothing alike. The first image, captured in 2000 with the Sloan ...

"Some quasars are not quiet neighbors." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Astronomers have used the wide-field view of the Dark ...

Observations confirm astronomers' expectation that early-Universe quasars formed in regions of space densely populated with companion galaxies. DECam's exceptionally wide field of view and special ...

Quasars are the brightest objects in the universe and among the most energetic. They outshine entire galaxies of billions of stars. A supermassive black hole lies at the heart of every quasar, but not ...

Quasars, the luminous beacons at the centers of distant galaxies, have puzzled astronomers for decades with their dramatic brightness variations. Recent observations suggest that these celestial ...

Quasars stripped early galaxies of their gas, the basic raw material for making stars.

Astronomers have discovered two early-universe galaxies where the central black holes appear to have grown far faster than ...

Astronomers have detected an intensely brightening and dimming quasar that may help explain how some objects in the early universe grew at a highly accelerated rate. The discovery is the most distant ...