Astronomers have discovered the largest and most ancient radio jet ever detected, emitted by a quasar from when the universe ...

Astronomers caught a brutal act of cosmic violence for the first time—one galaxy piercing another with deadly radiation.

DECam provided a clearer picture because it facilitated the only study yet that included large-area-to-small-area data. "DECam's extremely wide view is necessary for studying quasar neighborhoods ...

(CNN) — Astronomers have for the first time spotted two galaxies in the throes of a deep-space “duel.” Using combined observations from ground-based telescopes over nearly four years, the ...

Without a broad enough view, earlier observations could have missed the larger clusters of companion galaxies further out, giving an incomplete or even contradictory picture of quasar environments.

The picture that Achenbach and Nyland propose is ... “I just think there’s a lot more going on under the hood of the AGN-quasar umbrella than we’re currently aware of,” says Cionitti.

A quasar is a powerful source of light, created by torrid gas orbiting a gargantuan black hole at the center of a galaxy. The intense radiation from one quasar, named VIK J2348-3054, has probably ...

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