Here's why:
* 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 "inversely proportional to the square of the distance" part is crucial. This means that if you double the distance between two objects, the gravitational force between them becomes four times weaker. If you triple the distance, the force becomes nine times weaker, and so on.
In simple terms: Imagine two magnets. When they are close together, they attract strongly. As you pull them apart, the attraction weakens. Gravity works in a similar way, just on a much larger scale.
