Until now, our only source of gravitational waves has been binary star systems. Researchers from Northwestern University have potentially discovered a new non-binary source of gravitational waves ...

But there were plenty of gravitational waves: Some of the mass of the two combined objects — amounting to about a fifth of the mass of our sun — was converted directly into energy, in ...

A depiction of a dying star's cocoon (in yellow-green) surrounding a jet of energized material shooting out of a black hole (in red). Such cocoons are thought to be a new source of gravitational ...

Gravitational redshift is one of the core predictions of Einstein's General Relativity, but has never been tested directly in such a strong-field environment as our galactic center. Vlad2i and ...

A pair of objects, each more massive than the Sun but only as wide as a city, have once again produced ripples in spacetime that were picked up by sensitive gravitational wave detectors on Earth ...

For the second time ever, the Laser Interferometer Gravitational-Wave Observatory (LIGO) has spotted two ultradense stellar remnants known as neutron stars violently crashing together.

For the second time ever, the Laser Interferometer Gravitational-Wave Observatory (LIGO) has spotted two ultradense stellar remnants known as neutron stars violently crashing together. The ...