One supermassive black hole has kept astronomers glued to their scopes for the last several years. First came a surprise ...

The dense stellar remnant would, if confirmed, be the closest known object to any black hole, according to preliminary ...

The observations revealed features never before seen in real time around a supermassive black hole. Among them was the launch ...

X-Ray Astronomy Rocket-borne instruments have detected two powerful sources of X radiation in the sky. They may identify extremely faint little stars with superdense cores composed largely of neutrons ...

First promised four decades ago, the quantum-calorimeter era of X-ray astronomy has finally dawned. A quantum calorimeter is a device that makes precise measurements of energy quanta by measuring ...

It records over a million sources of X-rays. "That's actually pretty much the same number as had been detected in the whole history of X-ray astronomy going back 60 years. We've basically doubled ...

This marks the first-ever detection of X-ray spectral lines in a binary black hole system, offering a novel window into the ...

The two astronauts have a busy day ahead of them. Hague and Williams will "patch light leaks in the NICER X-ray telescope, ...

In X-Ray binary systems, a compact object (like a Black Hole, a Neutron Star or a White Dwarf) usually rotates about an optical star. An X-Ray binary with a Neutron Star as the compact object can be ...