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 "inverse square" part of the law means that as the distance between the objects decreases, the force of gravity increases dramatically. If you halve the distance, the force of gravity becomes four times stronger. If you reduce the distance to one-third, the force becomes nine times stronger.
In simpler terms: Imagine two magnets. The closer you bring them together, the stronger the magnetic force pulling them towards each other. Gravity works similarly, just on a much larger scale.
