Here's a more detailed explanation:
* Gravity is a fundamental force: It's one of the four fundamental forces in nature, along with electromagnetism, the strong nuclear force, and the weak nuclear force.
* Mass creates gravity: The more massive an object is, the stronger its gravitational pull.
* Distance matters: Gravity weakens with distance. The farther apart two objects are, the weaker the gravitational force between them.
So, while every object in the universe does exert a gravitational force on every other object, it's usually very, very weak, especially for small objects. The gravitational pull of Earth is much stronger than the pull of your pen, for example.
Let me know if you have any more questions!