Gravitational force is the attractive force that exists between any two objects with mass. It pulls objects toward each other, and its strength depends on the masses of the objects and the distance between them-the greater the masses and the closer the objects, the stronger the gravitational force
. This force is what keeps planets in orbit around the sun, the moon orbiting Earth, and causes objects to fall toward the ground when dropped. Earth's gravity, for example, is the combined gravitational pull of all its mass acting on objects near its surface, giving them weight
. Newton's Universal Law of Gravitation describes this force mathematically: the gravitational force between two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between them
. Gravity is a fundamental interaction in physics, the weakest of the four fundamental forces, but dominant at large scales, governing the motion of planets, stars, galaxies, and even light (as described by Einstein's general relativity)
. In summary, gravitational force is the universal attraction between masses that governs the structure and dynamics of the universe at macroscopic scales