Titan is a research area in planetary science that focuses on the study of Saturn's largest moon, Titan. Titan is unique in our solar system as it is the only moon with a dense atmosphere, which is predominantly composed of nitrogen with traces of methane and hydrogen. This makes Titan a particularly interesting object of study as it may provide insights into the processes that shaped early Earth and potentially the origins of life. Research on Titan includes studying its geology, weather patterns, and surface features such as lakes, rivers, and dunes. Scientists also study Titan's atmosphere, which undergoes seasonal changes and is thought to play a role in the formation of complex organic molecules. Overall, research on Titan helps us better understand the diverse environments that exist in our solar system and the potential for habitable worlds beyond Earth.