Newton's Law of Universal Gravitation is a fundamental concept in physics that explains how objects are attracted to each other by a force called gravity. According to this law, 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 their centers. Mathematically, it can be represented as F = (G * m1 * m2) / d^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses of the two objects, and d is the distance between them.

This law applies to objects on Earth as well. For example, imagine two people standing on the ground. The force of gravity between them can be calculated using their masses and the distance between them. The gravitational force pulls them towards each other and keeps them on the surface of the Earth.

In simpler terms, Newton's Law of Universal Gravitation states that any two objects with mass will attract each other. The larger the mass and the closer the objects are, the stronger the gravitational force between them.