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

NASA's Chandra and NuSTAR telescopes have teamed up to study a supermassive black hole-powered quasar that could have played a key role in ending the cosmic dark ages.

A black hole infamous for strange features has once again baffled astronomers, this time with rapid X-ray flashes. What could they be?

NASA telescopes reveal 35% of supermassive black holes are hidden by dust, reshaping theories about their role in galaxy growth.

Most picture the night sky as an endless sea of twinkling stars. But if your eyes could see the universe in X-rays, you’d spot thousands upon thousands of bright points representing giant black holes feeding on gas and dust.