The newly discovered "blazar," which has a mass equal to 700 million suns, is the oldest of its kind ever seen and changes ...
Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...
Supermassive black holes with powerful jets of high-energy particles, pointing directly at Earth are called blazars.
The James Webb Space Telescope has captured a mid-infrared picture of Sagittarius A*, filling in a long-standing gap in ...
A supermassive black hole has been discovered by astronomers that's shooting a giant energy beam directly at Earth.
Galactic nuclei images reveal how supermassive black holes interact with their surroundings using infrared telescopes.
"Finding more supermassive black holes that are potentially hosting jets raises the question as to how these black holes grew ...
The dense stellar remnant would, if confirmed, be the closest known object to any black hole, according to preliminary ...
A strange black hole is making scientists scratch their heads.
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 ...