Here's why:

* Gravity is a universal force: Every object with mass exerts a gravitational force on every other object with mass. This means the Earth exerts gravity on you, but you also exert gravity on the Earth (though your pull is much weaker).

* The Sun's gravity: The Sun is much more massive than the Earth, and it exerts a powerful gravitational force that keeps the Earth in orbit around it.

* Other objects in the universe: Stars, planets, galaxies, and even you and I all exert a gravitational force on each other, even if it's very weak.

In summary: Gravity is a fundamental force that exists between all objects with mass, not just between the Earth and other objects.