Saturn's Moons Revealed

Saturn hosts more than 280 known moons, the highest confirmed moon count of any planet. Enceladus shoots geysers of water ice and organic molecules from cracks near its south pole, fed by a subsurface ocean. The Cassini spacecraft flew through these plumes and detected hydrogen gas — a possible energy source for microbial life.

Titan has a methane cycle that mirrors Earth's water cycle, with rain, rivers, and lakes. The Dragonfly mission will send a drone helicopter there to search for prebiotic chemistry.