General relativity describes gravitation as the curvature of spacetime induced by the distribution of energy and momentum. In this framework, the stress–energy tensor encapsulates matter and field ...

Anisotropic structures in general relativity refer to configurations in which the pressure or stress within a gravitating system varies with direction. Such anisotropies arise naturally in highly ...

For those who watch gravitational waves roll in from the universe, GW250114 is a big one. It's the clearest gravitational wave signal from a binary black hole merger to date, and it gives researchers ...

General relativity stands as one of the bedrock theories in modern physics. Its strange view of relative time and space has been confirmed by countless experimental and observational tests, from ...

CRACKS in Einstein’s theory of relativity could be evident at the heart of our very own galaxy. If new calculations are correct, the enormous black hole that sits at the core of the Milky Way should ...