"This discovery dramatically changes our view on the origin of fast-moving stars..."

"Now we have to figure out, 'How the hell did nature produce that that?' Black holes are even weirder than we thought."

New research offers new clues to the formation of massive black holes, which may be more common than first thought.

The discovery of the brightest quasar ever seen in the early universe suggests a "hidden" population still waiting for astronomers to find.

Pulse pattern suggests distant black hole must be spinning at least at 50 percent the speed of light.

Halo of highly energized electrons around the black hole contracts dramatically during feeding frenzy.

The observatories are also releasing their first catalog of gravitational-wave events.

Called SS 433, the gamma-ray-generating system consists of a massive star in close orbit with what scientists think may be a black hole.

Simulations of merging galaxies are giving researchers insight into how supermassive black holes get so gigantic.