Einstein's Field Equations are a set of ten interrelated equations in general relativity formulated by Albert Einstein. They describe how matter and energy in the universe influence the curvature of spacetime, which in turn affects the motion of objects. Essentially, these equations explain how gravity is not just a force but a result of the geometry of the universe. The equations relate the distribution of mass and energy to the curvature of spacetime through a mathematical framework. This means that massive objects like planets and stars warp the fabric of spacetime, causing other objects to move along curved paths, which we perceive as gravitational attraction.