General relativity
General relativity is a theory of gravitation that describes gravity as the curvature of spacetime caused by mass and energy. It provides a framework for understanding gravitational phenomena at astronomical and cosmological scales.
General relativity is discussed in theoretical physics, astrophysics, and cosmology.
Status
The theory is supported by a wide range of observational tests, including gravitational lensing, orbital dynamics, and gravitational wave detection. Extensions and alternatives are studied to address open questions at quantum and cosmological scales.