The giant black hole has a mass of 30 billion suns and sits at the center of a galaxy located hundreds of millions of light-years from Earth. Astronomers call the cosmic monster an ultramassive ...

Astronomers measured the spin rate of the supermassive black hole at the center of quasar H1821+643, and the result may be a clue about how supermassive black holes form. Skip to main content.

A penny-sized black hole would have roughly the same mass as the Earth for reasons explained later. Frank Heile, a particle physicist at the University of Stanford, has previously provided insight ...

NASA finds supermassive black hole called ‘Space Jaws:’ Why it deserves sci-fi horror name A sneaky black hole was the source of a tidal disruption event that was so large and so bright that ...

Inside a black hole, once the event horizon is crossed, things begin to get really weird as space and time shift places and stretch to infinity, as Einstein online explains. This is the hardest ...