Rings of Saturn

Rare card · No. 42025

Saturn has the most extensive and complex ring system of any planet in the Solar System. The rings consist of particles in orbit around the planet, ranging from micrometers to meters in size, and are made almost entirely of water ice, with a trace component of rocky material. Though light reflected from the rings increases Saturn's apparent brightness, they are not themselves visible from Earth with the naked eye. In 1610, the year after his first observations with a telescope, Galileo Galilei became the first person to observe Saturn's rings, though he could not see them well enough to discern their true nature. In 1655, Christiaan Huygens was the first person to describe them as a disk surrounding Saturn. The concept that Saturn's rings are made up of a series of tiny ringlets can be traced to Pierre-Simon Laplace. The rings have numerous gaps where particle density drops sharply. Two of these are cleared by moons embedded within them, and many others are at locations of known destabilizing...

Read on Wikipedia · Image NASA / JPL-Caltech / Space Science Institute, Public domain