Methane is most notably abundant on the planet Saturn's largest moon, Titan. Titan has a thick atmosphere composed mostly of nitrogen, along with a significant presence of methane, which plays a key role in its unique climatic and geological processes. Methane exists in lakes and rivers on Titan's surface, creating a terrestrial-like environment. This moon is of great interest to scientists, as the methane cycle is somewhat analogous to Earth's water cycle, suggesting intriguing possibilities for prebiotic chemistry and potentially the conditions for life in extreme environments.