The newly discovered "blazar," which has a mass equal to 700 million suns, is the oldest of its kind ever seen and changes ...
Scientists have detected emanating from the nucleus of a galaxy relatively close to our Milky Way flashes of X-rays gradually ...
NASA astronauts Nick Hague and Suni Williams completed a six-hour spacewalk to repair and upgrade equipment outside the ...
In 2018, a galaxy about 270 million light-years away from Earth exhibited a major increase in activity. It quieted down again ...
A mysterious black hole has started behaving even more strangely, scientists have said. The supermassive black hole has been ...
Using the MIRI instrument onboard the James Webb Space Telescope, an international team of scientists made the first-ever ...
Black holes themselves emit no light, but the supermassive black holes at the centers of galaxies are often surrounded by ...
International teams of astronomers monitoring a supermassive black hole in the heart of a distant galaxy have detected ...
A supermassive black hole in a distant galaxy is once again surprising scientists. In 2018, a black hole called 1ES 1927+654, ...