The Einstein Equation, also known as the Einstein field equations, is a set of ten interrelated equations in Albert Einstein's theory of general relativity. These equations describe how matter and energy in the universe influence the curvature of spacetime, which in turn affects the motion of objects. Essentially, they explain how gravity works on a cosmic scale. The equations relate the geometry of spacetime to the distribution of mass and energy. In simpler terms, they show that massive objects like stars and planets warp the fabric of spacetime, causing other objects to move along curved paths. This concept revolutionized our understanding of gravity and the universe.