Some things in cosmology may simply be unknowable. Why is there something rather than nothing? What lies outside the universe? What is inside a black hole? That last one has been niggling at ...

Add Yahoo as a preferred source to see more of our stories on Google. In 2019, LIGO and Virgo detected GW190521—a mysterious gravitational wave that could mark either the colossal merger of two black ...

Astronomers have spotted a rare, rule-breaking quasar in the early Universe that appears to be growing its central black hole at an astonishing pace. Observations show the black hole is devouring ...

How black holes grew so quickly The dense, gas-rich environments in early galaxies enabled short bursts of "super Eddington accretion"; a term used to describe what happens when a black hole "eats" ...

A decade ago, scientists first detected ripples in the fabric of space-time, called gravitational waves, from the collision of two black holes. Now, thanks to improved technology and a bit of luck, a ...

According to Einstein’s theory of gravity, black holes have only a small handful of distinguishing characteristics. Quantum theory implies they may have more. Now an experimental search finds that any ...

Astronomers using the Very Long Baseline Array (VLBA) and the Very Large Array (VLA) have caught a supermassive black hole in the act of awakening from a long slumber, providing an unprecedented ...

Astronomers may have finally cracked one of the universe’s biggest mysteries: how black holes grew so enormous so fast after the Big Bang. New simulations show that early, chaotic galaxies created ...

Researchers announced they have discovered the most massive black hole merger by detecting gravitational waves. Simulating eXtreme Spacetimes via Wikimedia Commons under CC BY-SA 4.0 In 2015, the ...

At the heart of nearly every galaxy lurks a cosmic giant: a supermassive black hole. These mysterious objects, millions to billions of times more massive than our Sun, exert such powerful gravity that ...

In May 2019, astronomers picked up something strange in the fabric of spacetime. The LIGO and Virgo detectors recorded a gravitational wave that lasted just one-tenth of a second. The signal, known as ...