How does Saturn's moon Titan have rivers and lakes without liquid water on the surface?

Titan is the only moon with a thick atmosphere, and it is much colder than Earth, with surface temperatures around minus 179°C. At those temperatures, methane and ethane can exist as liquids, so Titan has a working weather cycle with clouds, rain, rivers, and lakes made of hydrocarbons. Cassini and its Huygens probe revealed channels, shorelines, and lake basins on Titan’s surface. The methane cycle plays a role similar to Earth’s water cycle, though it is far slower and occurs in a frozen world. Scientists study Titan because it offers a natural laboratory for alien climate and chemistry.