Here's why:

* Universal Law of Gravitation: Newton's law of universal gravitation states that every particle in the universe attracts every other particle with a force that is:

* Proportional to the product of their masses: The more massive the objects, the stronger the gravitational attraction.

* Inversely proportional to the square of the distance between their centers: The farther apart the objects are, the weaker the gravitational attraction.

* Always Attractive: Gravity is always an attractive force, meaning it pulls objects together.

Examples:

* The Earth's gravity: This is the force that keeps us on the ground and pulls objects down when we drop them.

* The Moon's gravity: This is the force that causes tides on Earth.

* The Sun's gravity: This is the force that keeps Earth and the other planets in orbit around it.

While gravity is the weakest of the fundamental forces, its influence extends over vast distances, making it the force that shapes the structure of the universe.