Particle collisions occur when two or more particles collide at high speeds, often resulting in the creation of new particles. These interactions are fundamental to understanding the forces that govern the universe and are studied in facilities like the Large Hadron Collider. By smashing particles together, scientists can explore the properties of matter and the fundamental building blocks of the universe. The study of particle collisions helps physicists test theories such as the Standard Model and search for new phenomena, including dark matter and supersymmetry. Each collision can produce a variety of outcomes, providing valuable data that enhances our understanding of the universe's origins and structure.