Introduction To General Relativity -

: Einstein's equations describe the precise relationship between the distribution of matter/energy and the resulting curvature of spacetime. Key Predictions and Applications

: This fundamental idea states that the effects of gravity are locally indistinguishable from the effects of acceleration. Introduction to General Relativity

: Massive objects like stars and planets warp the "fabric" of spacetime. Objects moving through this space follow curved paths (geodesics), which we perceive as the "pull" of gravity. Introduction to General Relativity

is the modern theory of gravitation developed by Albert Einstein between 1907 and 1915 . Unlike Newtonian gravity, which views it as an attractive force between masses, GR describes gravity as a result of the curvature of spacetime caused by mass and energy. Core Concepts Introduction to General Relativity