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 ...

These are rare occurrences—scientists estimate that the giant black hole at the center of our Milky Way galaxy gobbles a star ...

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 ...

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. The first direct detection of gravitational waves ...

Whereas detectors like LIGO and Virgo can capture the final stages of a black hole collision, LISA will be able to track them for years before they merge as they spiral in towards each other ...

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 ...

Black holes are invisible, yet they are among the brightest things in the universe. If a star wanders too close to a black hole, it gets torn apart in a fireworks show called a tidal disruption ...

A high-speed crash between two dwarf galaxies might explain a unique feature in space – and provide useful information on ...