The scientific definition of gravity states that it is the force that attracts two objects with mass together. In simpler terms, it is what keeps us grounded on the Earth and influences the motion of celestial bodies like the planets in our solar system. To further understand gravity and its scientific definition, we need to explore the Universal Law of Gravitation formulated by Sir Isaac Newton. Newton's law states that the force of gravity between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This equation is expressed as F = (G * m1 * m2) / r^2, where F represents the gravitational force, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between their centers of mass. By utilizing this equation, scientists can calculate the strength of the gravitational force between two objects in the universe, providing a quantitative understanding of gravity.