Gravity is a fundamental force in nature that governs the interactions between objects with mass or energy. It is the force that gives weight to physical objects and governs the motion of celestial bodies, such as planets, stars, and galaxies.
According to Albert Einstein's theory of general relativity, gravity is not a force in the traditional sense but rather the curvature of spacetime caused by the presence of mass and energy. In this theory, massive objects deform the fabric of spacetime, creating a curvature or "gravity well." Other objects, including light, then follow the curved path created by this curvature.