Gravity is a fundamental force in the universe that attracts objects with mass towards each other. It is responsible for the phenomenon we commonly experience as the force that keeps us grounded on the Earth and governs the motion of celestial bodies.
According to the theory of general relativity proposed by Albert Einstein, gravity is not described as a force in the traditional sense but rather as the curvature of spacetime caused by mass and energy. In this theory, massive objects create a "dent" or curvature in the fabric of spacetime, and other objects with mass or energy respond to this curvature by moving along curved paths.
Gravity is a universal force, meaning it acts on all objects regardless of their size or composition. However, the strength of gravity depends on the mass of the objects involved and the distance between them. The greater the mass of an object, the stronger its gravitational pull, and the closer two objects are to each other, the stronger the gravitational force between them.
The force of gravity not only keeps objects on the Earth's surface but also determines the motion of planets around the sun, the moon around the Earth, and the interactions between galaxies. It plays a fundamental role in shaping the structure of the universe on both the largest and smallest scales.