Particle physics is the study of the fundamental particles and forces that make up our universe. It uses particle accelerators and detectors to smash atoms and study their subatomic pieces. The Standard Model is the best current theory of particle physics, which describes the known particles and their interactions. However, there are still many mysteries, such as the nature of dark matter and dark energy, that particle physics seeks to solve. The field has important practical applications, such as in medical imaging and cancer treatment. Overall, particle physics is a crucial field for understanding the fundamental nature of our universe.