* Newton's Law of Universal Gravitation: This 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 their centers.
* Inverse Square Law: The "inverse square" part is crucial. It means that if you halve the distance between two objects, the gravitational force between them will become four times stronger. If you triple the distance, the force becomes nine times weaker.
In simpler terms: Imagine you have two magnets. The closer you bring them together, the stronger the magnetic force pulling them towards each other. Gravity works the same way, just on a much larger scale!