Two colossal black holes—among the most massive ever seen—collided in deep space, creating gravitational waves that rippled across the cosmos and shook the foundations of astrophysical theory.

A U.S. gravitational wave detector spotted a collision between fast-spinning “forbidden” black holes that challenge physics ...

Yale astronomer Pieter van Dokkum and a team of researchers have discovered an object in space they call the "Infinity" ...

The massive black hole has been dubbed GW231123. Its unusual size and behavior is challenging scientists' understanding of ...

A new method to analyze gravitational-wave data could transform how we study some of the universe's most extreme events—black ...

But in the past two decades, new types of black holes have been seen and astronomers are beginning to understand how they ...

Astronomers have discovered a Great Wall in the universe that is so huge that it defies logic and cosmological principles. The Great Wall of Hercules-Corona Borealis is a galaxy cluster that runs for ...

The Roswell story remains one of the preeminent UFO myths, with a UFO museum and annual festival driving visitors to the town ...

A fire broke out at a fireworks facility in Esparto, Yolo County, on Tuesday, July 1, triggering multiple explosions. Flames spread from several structures to nearby grass, burning about 80 acres.

The fireball was bright enough to be spotted by a lightning-tracking satellite from orbit.

Study reveals that high-energy cosmic rays are born in magnetic fields during neutron star mergers, a prelude to black holes.

A new class of cosmic explosions — which emit more energy than any other brightness-changing event — may come from megastars getting shredded by supermassive black holes (illustrated). Adam ...