Gravitational refers to the force of attraction between two masses, which is a fundamental concept in physics. This force is what keeps objects, like planets and moons, in orbit around larger bodies, such as stars and galaxies. The strength of this force depends on the masses involved and the distance between them, as described by Isaac Newton's law of universal gravitation. In everyday life, gravitational force is what keeps us grounded on Earth. It affects how we move, how objects fall, and even how we experience weight. Without gravity, life as we know it would be drastically different, as everything would float freely in space.