NASA astronauts Nick Hague and Suni Williams completed a six-hour spacewalk to repair and upgrade equipment outside the ...

The newly discovered "blazar," which has a mass equal to 700 million suns, is the oldest of its kind ever seen and changes ...

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

In December 2022, less than six months after commencing science operations, NASA's James Webb Space Telescope revealed ...

Using the MIRI instrument onboard the James Webb Space Telescope, an international team of scientists made the first-ever ...

A strange black hole is making scientists scratch their heads.

Astronomers have detected a mid-infrared flare from the supermassive black hole at the heart of the Milky Way galaxy for the ...

Black holes themselves emit no light, but the supermassive black holes at the centers of galaxies are often surrounded by ...

Scientists have detected emanating from the nucleus of a galaxy relatively close to our Milky Way flashes of X-rays gradually ...

A mysterious black hole has started behaving even more strangely, scientists have said. The supermassive black hole has been ...

"For such a faint and unknown target, we were not sure if we would get any data at all — but the strategy worked." ...

Regular pulses of X-ray radiation emanating from a supermassive black hole could be explained by a white dwarf star on the ...