♄Saturn

Saturn is the most beloved planet for its dazzling rings. Made of countless fragments of ice and rock, the rings span wider than the distance from Earth to the Moon, yet are typically only tens of meters thick. Saturn's density is so low that it is the only planet in the Solar System lighter than water, light enough to float if there were an ocean big enough. Its largest moon, Titan, is a unique world with a thick atmosphere and rivers and lakes of methane, while the small moon Enceladus draws attention as a candidate for life, spraying plumes of water from an ocean beneath its icy shell.