Most cosmologists believe that these stars were the first large, free-floating structures to illuminate our universe, and ...

Astronomers detected a black hole displaced nearly a kiloparsec from the center of a dwarf galaxy 230 million light-years ...

Earlier this year, detectors in Washington and Louisiana picked up GW250114. The signal revealed two black holes, each 33 ...

Researchers think a mysterious signal, dubbed GW190521, could have arrived from a parallel universe after passing through a ...

Supermassive black holes spiral towards each other in this simulation created by NASA's Goddard Space Flight Center that shows how they glow in ultraviolet and X-ray light. The black holes are only 40 ...

Scientists spotted an enormous black hole in the early universe that's growing at 2.4 times the theoretical Eddington limit.

The merger of two black holes is a momentous event, revealing the wildest and most extreme configurations of space, time and gravity known to science.Researchers have now gotten their best look yet at ...

Located 12.8 billion light-years away, the black hole, called RACS J0320-35, weighs about a billion times the mass of our sun ...

LIGO observatory near Richland confirmed Einstein’s theory of relativity, it also has proven one of Hawking’s theorems.

Astrophysicists have witnessed a collision between two black holes that was so loud, they were able to use it to test — and ...

Ten years ago, astronomers made history when they first detected ripples in spacetime, called gravitational waves, from the collision of two black holes. That moment in 2015, known as GW150914, ...

Some things we see in space appear to outpace light. Now we are learning to harness these bizarre optical illusions to ...