The planet with the most extensive ring system is Saturn. Saturn's rings are magnificent and complex, composed of countless tiny particles of ice and rock, ranging in size from small grains to massive chunks. These rings extend outward from the planet's equator and are up to 175,000 miles wide, although they are incredibly thin, often only a few dozen feet thick. The intricate structure of Saturn's rings is maintained by the gravitational influence of its many moons, and they are among the most stunning features in our solar system.