Planets around other stars need to be prepared for extreme weather conditions, according to a new study from NASA’s Chandra X ...

International teams of astronomers monitoring a supermassive black hole in the heart of a distant galaxy have detected ...

Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...

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