Astronomers from the Steward Observatory in Arizona and elsewhere report the discovery of a structure consisting of a ...

The black hole’s mass is over half that of all the stars in the surrounding galaxy, a record for any galaxy hosting a quasar.

A major realization of Einstein’s general relativity is the fact that massive objects warp space-time in a way that is ...

Distant Quasar: Multiple images of a distant quasar are visible in this combined view from NASA’s Chandra X-ray Observatory ...

"It's difficult to explain how these quasars could have grown so big if they appear to have nothing to feed from." ...

A team of astronomers has identified a double gravitational lens system with an extraordinary “zig-zag” light path, rewriting ...

Discovered in late 2022, COS-87259 is a hyperluminous quasar at a redshift of 6.85. The AGN is heavily obscured and has a bolometric luminosity of approximately 50 trillion solar luminosities.

As this material is accelerated around the hole, it is torn apart and emits a huge amount of light, so much so that even an object as distant as J0529-4351 is still visible to us. This quasar's ...

Astronomers have identified the brightest object ever observed in the universe, a quasar named J0529-4351. This quasar is 500 trillion times brighter than the Sun, setting a new record for ...

Black hole in ULAS J1120+0641 has record mass compared to its galaxy. Quasar's black hole is 1.4 billion solar masses, half its galaxy's mass. Astronomers used JWST to uncover details about this ...

An artist's depiction shows how a quasar, which is the extremely bright core of a galaxy, unleashes torrents of energy from its central black hole. Scientists didn't build the James Webb Space ...