The four fundamental forces in the cosmos are:
1. **Gravitational Force**: This is the force of attraction between all masses. It is the weakest of the four forces but has an infinite range. It governs the motion of planets, stars, galaxies, and even light.
2. **Electromagnetic Force**: This force acts between electrically charged particles. It is much stronger than gravity and also has an infinite range. It includes both electric forces (between charged particles) and magnetic forces (associated with moving charges).
3. **Weak Nuclear Force**: This force is responsible for radioactive decay and certain types of nuclear reactions. It has a very short range, approximately 0.1% of the diameter of a typical atomic nucleus, and is weaker than the electromagnetic and strong nuclear forces.
4. **Strong Nuclear Force**: This is the strongest of the four forces. It acts between quarks and holds the nuclei of atoms together. Despite its strength, it has a very short range, about the size of an atomic nucleus.
These fundamental forces govern the interactions of matter and energy throughout the universe.
