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 means that as the distance between objects increases, the force of gravity decreases rapidly. If you double the distance, the gravitational force becomes four times weaker.
Example:
Imagine you're holding a ball. The Earth's gravity pulls on it. If you move the ball further away from the Earth (like launching it into space), the force of gravity between the ball and Earth will become weaker.
Important Note: Gravity never truly disappears, it just gets incredibly weak at large distances.
