Einstein's 1915 theory describing gravity as curvature of spacetime caused by mass and energy. Confirmed by light bending, gravitational time dilation, and gravitational wave detection. It remains the foundation of modern gravitational physics.
Ripples in spacetime caused by accelerating massive objects, such as merging black holes. Predicted by Einstein in 1916 ...
A region of spacetime where gravity is so strong that nothing, not even light, can escape once past the event horizon. B...
The bending of light from a distant source by the gravitational field of a massive intervening object. Predicted by gene...
Dive deeper into general relativity and related concepts on Cosmos Observatory.