GR (General Relativity)

General Relativity is Albert Einstein’s theory describing gravity as the warping of spacetime caused by mass and energy. Instead of thinking of gravity as a force between objects, it explains that massive objects like stars and planets bend the fabric of spacetime around them. This curvature guides the movement of other objects, causing what we perceive as gravitational attraction. For example, Earth curves spacetime around it, so objects fall toward it not because of a force pulling them directly, but because they follow the curved paths—geodesics—in this warped spacetime.