What planet has rings made of ice and rock around it?

The gas giant renowned for its magnificent, icy halo is Saturn. Its iconic rings are composed primarily of billions of individual particles, ranging in size from tiny dust grains to chunks as large as houses, and even some towering like mountains, all made almost entirely of water ice with a small amount of rocky material and dust mixed in. These countless pieces orbit the planet, creating the breathtaking spectacle we observe from Earth.

While Saturn's rings are undeniably the most famous and visually striking, it's a common misconception that it's the only planet with such features. All four of our solar system's gas giants—Jupiter, Uranus, and Neptune—also possess ring systems. However, Saturn's rings are by far the most extensive, brightest, and most complex, making them visible even through a small telescope (Deals), unlike the fainter rings of its planetary neighbors (Review). Early astronomers like Galileo Galilei first observed Saturn's unusual appearance in 1610, though it was Christiaan Huygens in 1655 who correctly identified them as a disk surrounding the planet.

Despite their vast diameter, stretching hundreds of thousands of kilometers across, Saturn's main rings are incredibly thin, typically only about 10 to 100 meters thick. Scientists believe these rings are relatively young in astronomical terms, possibly forming between 10 and 100 million years ago, perhaps from a shattered moon, comet, or asteroid that ventured too close to the planet and was torn apart by its immense gravity. Intriguingly, these majestic rings are not permanent; particles are slowly "raining" down onto Saturn, and current estimates suggest they may completely disappear within the next 100 to 300 million years.