A tiny particle that smashed into Earth with a record-shattering energy of 220 petaelectronvolts could be the last scream of ...

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

The Laser Interferometer Gravitational-Wave Observatory (LIGO) has detected new gravitational waves from a merger ...

In a recent piece for my column The Universe, I wrote about the biggest black holes in the cosmos. Black holes are rather ...

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

The black hole appears to be growing at about 2.4 times the Eddington limit, which means it is consuming the equivalent of ...

The galaxy’s heart hides a cosmic giant that shouldn’t exist so soon after the Big Bang but could explain the mysterious ...

"This tells us that the magnetized plasma swirling near the event horizon is far from static; it's dynamic and complex, ...

A decade ago, the first gravitational waves confirmed that black holes collide. Telescopes soon revealed shadows of giants ...

Astronomy has a way of surprising you. When you believe the universe has yielded its biggest secrets, distant giants and ...

Astronomers detected in unprecedented detail a collision between two black holes. Their observations confirm predictions made ...

To destroy enough matter to explain the Hubble tension, black holes would have to merge at an unrealistic rate.