Space and time🕤🕧 . Albert Einstein's theory of relativity, comprising special and general relativity, revolutionized our understanding of space and time. Special relativity, proposed in 1905, relates space and time as components of a four-dimensional spacetime, where measurements depend on the observer's motion. General relativity, introduced in 1915, extends this to include gravity, describing it as the curvature of spacetime caused by mass and energy. These theories have been crucial in shap