A supermassive black hole in the spiral galaxy NGC 3783 just delivered an X-ray surprise that astronomers have never watched ...
Our galaxy's supermassive black hole is famous for being one of the dimmest in the universe. Evidence from a new space ...
Leading X-ray space telescopes XMM-Newton and XRISM have spotted a never-seen-before blast from a supermassive black hole. In ...
Astronomers have spotted the largest and most distant flare ever observed from a supermassive black hole. Nicknamed "Superman," the flare originated 10 billion light-years from Earth, and at its peak, ...