Astronomers are very familiar with the twin jets launched from the poles of supermassive black holes. These structures can ...

Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...

There's a universe full of black holes out there, spinning merrily away—some fast, others more slowly. A recent survey of ...

Astronomers have detected a mid-infrared flare from the supermassive black hole at the heart of the Milky Way galaxy for the ...

Black holes that have been obscured by clouds of dust still emit infrared light, enabling astronomers to spot them for the ...

NASA Goddard Space Flight Center runs down the best-known Black Holes in the Milky Way galaxy and the Large Magellanic Cloud.

Caltech’s Katie Bouman explains how the Event Horizon Telescope Collaboration captured the first imager of the Sagittarius A* ...

Active galactic nuclei are supermassive black holes at the center of certain galaxies. As matter falls into these black holes ...

Galaxy clusters are home to many giant elliptical galaxies that have completed their growth and are not forming stars.

"If our eyes were able to detect X-rays, the sky would be full of dots. And every single one of those dots would be an ...

In 2018, a galaxy about 270 million light-years away from Earth exhibited a major increase in activity. It quieted down again by 2020 -- only to dramatically increase its output again in 2023. At that ...

Since 2018, we've seen 1ES 1927+654 generate jets in real time and found it may have a lone white dwarf orbiting near the ...