Some predators work alone, but others rely on deadly teamwork to dominate the wild. From wolves to orcas, these fearsome ...

Hypervelocity stars (HVSs) were first theorized to exist in the late 1980s. In 2005, the first discoveries were confirmed.

By observing tiny ripples in spacetime called "gravitational waves" that propagate away from colliding black holes, ...

New details have been discovered about M87*, the first black hole ever photographed, revealing its plasma, its brightness and ...

Researchers said on Thursday that they had discovered twin-lobed radio jets they suspect were formed when the universe was ...

Rapid X-ray oscillations detected near the innermost orbit of a supermassive black hole could indicate the presence of a nearby orbiter such as a white dwarf ...

Black holes are notorious for gobbling up, well, everything. They're icons of destruction, ruthless voids, ambivalent abysses ...

A historic nuclear reactor in Washington State was a critical part of the Manhattan Project, a site where plutonium was ...

A flash of light called the Platypus has hallmarks of a mid-sized black hole shredding a star and a type of burst thought to be a stellar explosion.

The supermassive black hole has been sending out flashes that have increased in speed. Astronomers say they have never seen anything like it before. The black hole is known as 1ES 1927+654 ...

Since initiating the program’s design phase two years ago, the DARPA-NASA management team has encountered the challenges inherent in sending a nuclear reactor into space for the first time in ...