Here's a breakdown:
* Universal Law of Gravitation: Sir Isaac Newton discovered that every object in the universe attracts every other object with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
* Mass and Gravity: The more massive an object, the stronger its gravitational pull. This is why planets have stronger gravity than a small rock.
* Distance and Gravity: The farther apart two objects are, the weaker the gravitational force between them. This is why you don't feel the pull of the sun as strongly as the pull of the Earth.
Gravity is the fundamental force that keeps us on the ground, holds the Earth in orbit around the sun, and shapes the entire universe.