The bold question-askers at What If imagine the cosmic consequences of a collision between a black hole and a white hole.

In a recently published paper in Physical Review Letters, scientists propose a comprehensive theoretical framework indicating ...

Could Mysterious Black Hole Burps Rewrite Physics?

Caltech simulations reveal what happens when black holes collide with neutron stars—violent cracking, intense shock waves, ...

Black holes, once purely theoretical, are now observable phenomena, offering insights into the universe. Their intense ...

A computer simulation shows how two neutron stars of unequal mass merge, form a black hole and spit out a jet of high energy matter.

A groundbreaking simulation reveals how neutron star mergers forge black holes, generate gamma-ray bursts, and scatter gold ...

This unprecedented view of the Bullet Cluster provided by the James Webb Space Telescope and the Chandra X-ray Observatory ...

Nearly 10 years ago, scientists observed ripples in spacetime created by the collision of two black holes that took place 1.3 billion years ago.

A Milky Way collision with a supermassive black hole might be closer than we thought. Hidden deep in the Large Magellanic Cloud dwarf galaxy that orbits the Milky Way on an ever-closing loop ...

A neutron star's final moments may spark violent starquakes, monster shock waves, and even a fleeting, never-before-seen object called a black hole pulsar.

For decades, astronomers have theorized that black holes fall into three broad categories. There are the stellar-mass black holes, which range from five to 50 times the mass of our Sun. Then ...