Supermassive black hole, Earth

Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...
The James Webb Space Telescope has captured a mid-infrared picture of Sagittarius A*, filling in a long-standing gap in ...
"Finding more supermassive black holes that are potentially hosting jets raises the question as to how these black holes grew ...
Galactic nuclei images reveal how supermassive black holes interact with their surroundings using infrared telescopes.
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 ...