Kaons are subatomic particles that belong to a group called mesons. They are made up of a quark and an antiquark, specifically a strange quark and either an up or down quark. Kaons come in several varieties, including the positively charged K+, negatively charged K-, and neutral K0 kaons. They play a significant role in particle physics, particularly in the study of CP violation, which helps explain the matter-antimatter asymmetry in the universe. These particles are produced in high-energy collisions, such as those occurring in particle accelerators or cosmic ray interactions. Kaons are unstable and decay into other particles, typically within a short time frame. Their unique properties make them valuable for research in understanding the fundamental forces and particles that govern the universe.