The planet with the most moons in our solar system is Saturn. As of recent discoveries, Saturn has over 80 moons, surpassing Jupiter, which had previously held the record. Saturn's largest moon, Titan, is particularly notable because it is larger than the planet Mercury and has a thick atmosphere, along with lakes of liquid methane and ethane. The continuous exploration of these moons, especially through missions like the Cassini spacecraft, has revealed a variety of geological features and compositions, contributing significantly to our understanding of celestial bodies in our solar system and the potential for life beyond Earth.