Supermassive black hole, Earth

Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...
"Finding more supermassive black holes that are potentially hosting jets raises the question as to how these black holes grew ...
The first black hole that astronomers observed "turning off" just turned back on, releasing jets of hot gas into the cosmos.
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 ...
"There's always going to be a little hallucination" with machine learning, says PlayerUnknown Productions' engine team behind ...