Cometary chemistry is the study of the chemical composition of comets, which are icy bodies in our solar system that orbit the Sun. Comets are made up of ice, dust, and rock, and they are believed to be remnants from the early solar system. By analyzing the chemical composition of comets, researchers can gain insights into the formation and evolution of our solar system, as well as the conditions that existed in the early solar system. Cometary chemistry also plays a role in understanding the potential for life on other planets and how comets may have contributed to the development of life on Earth.