Cometary science is a branch of planetary science that focuses on the study of comets. Comets are small, icy bodies that orbit the Sun and are believed to be remnants from the early solar system. They are composed of ice, dust, and rocky material, and can vary in size from a few kilometers to tens of kilometers in diameter. Scientists study comets to learn more about the formation and evolution of the solar system, as well as the role that comets may have played in delivering water and organic materials to Earth. Research in cometary science involves studying the composition, structure, and behavior of comets, as well as their interactions with the solar wind and other solar system bodies. Observations of comets can be made using ground-based telescopes, spacecraft missions, and robotic landers. By studying comets, scientists can gain insights into the origins of our solar system and the potential for life elsewhere in the universe.