You're asking a great question, but there's no single force that every object in the universe exerts on every other object. Instead, there are four fundamental forces that govern interactions between objects:

1. Gravity: This is the force of attraction between any two objects with mass. It's what keeps us on Earth, holds planets in orbit around the sun, and binds galaxies together. Gravity is a long-range force, meaning it acts over large distances, but it's relatively weak compared to the other fundamental forces.

2. Electromagnetism: This force governs interactions between electrically charged particles. It's responsible for things like electricity, magnetism, and light. Electromagnetism is also a long-range force, but it's much stronger than gravity.

3. Strong Nuclear Force: This is the strongest force in the universe, but it acts only over extremely short distances within the nucleus of an atom. It holds protons and neutrons together, overcoming the electromagnetic repulsion between protons.

4. Weak Nuclear Force: This force is responsible for radioactive decay and other nuclear processes. It's weaker than the strong force but still plays an important role in the structure of the universe.

So, to answer your question:

* Every object in the universe exerts a gravitational force on every other object, due to its mass.

* Objects with electric charges will also exert electromagnetic forces on each other.

* Objects within atomic nuclei experience the strong and weak nuclear forces.

It's important to remember that the strength of these forces depends on the masses, charges, and distances involved. For example, the gravitational force between two planets is much stronger than the force between two people.