Titan, Saturn’s largest moon, has an Earth-like landscape with lakes, rivers, and even rain. But instead of water, these bodies are filled with liquid methane and ethane. Temperatures on Titan are so cold (-179°C) that methane behaves like water does on Earth, forming a full weather cycle. If you could stand on Titan’s surface, you’d see a hazy orange sky and lakes of liquid natural gas lapping at the shore.