Imagine looking up at the night sky and learning that a black hole is racing toward Earth at nearly the speed of light. Not a ...

For several years, astronomers have observed small dense gas clouds falling toward the supermassive black hole Sagittarius A* ...

Astronomers have an answer for a long-running mystery in astrophysics: why is the growth of supermassive black holes so much lower today than in the past? A study using NASA's Chandra X-ray ...

An illustration of small primordial black holes. In reality, such tiny black holes would have a difficult time forming the accretion disks that make them visible here. Credit: NASA Imagine the ...

Astronomers may have discovered an extreme pair of light-spewing black holes that are spiraling toward an enormous collision — the effects of which could be felt in the next century. Using decades of ...

More than 60 years after it was first spotted, Cygnus X-1 — the first confirmed black hole — is still full of surprises. Researchers have finally measured the energy output of this behemoth's "dancing ...