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

New images show a collision of two enormous black holes, and it's the most distant black hole merger ever detected. The collision happened just 740 million years after the big bang event that ...

Gravitational waves stretch and squeeze the fabric of space and time itself. When space/time is squeezed, pulsar pulses ...

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

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

A new model suggests how gravitational waves created by the collision between black holes spread and interact within the fabric of space-time. When black holes collide and merge to form even more ...

But black holes aren't too limited by size or number. On average, a standard black hole is about three to ten times the size of our sun. As massive as "regular" black holes can get, supermassive ...

Collisions Near the Event Horizon. When matter gets very close to a fast-spinning black hole, especially if it moves opposite to the black hole’s spin, strange things happen.

Astronomers detect 10 billion-year-old radio waves from a distant galaxy cluster SpARCS1049, revealing a mini-halo that ...

A spinning disk and a smartphone are all that are needed for students to study vibrations analogous to those produced by the ...

Astronomers have spotted a supermassive black hole ripping apart and devouring a star in colliding galaxies. It is only the second time a tidal disruption event has been seen in interacting galaxies.

A new census reveals that 35% of supermassive black holes are hidden behind dust, disrupting major galactic models.