saturn

A total of 126 images taken over the course of two hours make up this mosaic picture of Saturn. The Cassini-Huygens spacecraft snapped the photos on October 6, 2004, when it was approximately 3.9 million miles (6.3 million kilometers) from Saturn. Cassini was on a four-year mission to explore the ringed planet.
Two of Saturn's 48 known moons are barely visible in this picture of the ringed planet. Mimas, at the upper right, has an enormous impact crater on one side, and Tethys, at the bottom, has a huge rift zone called Ithaca Chasma that runs nearly three-quarters of the way around the moon.

Lit from below by Saturn's internal thermal glow, clearings in the planet's cloud system appear as white pearls. The regularity of the clearings suggests that they may be a manifestation of a large planetary wave.

Saturn's otherworldly rings encircle the planet and extend out for hundreds of thousands of kilometers. The rings—there are thousands—are made up of billions of ice and rock particles, thought to be pieces of comets, asteroids, or shattered moons

Saturn's rings appear blue in this false-color image taken from Cassini. The planet's northern hemisphere is about twice as bright as its southern hemisphere, because high-level, fine particles are about half as prevalent in the northern hemisphere as in the south. These particles block Saturn's glow more strongly, making it look brighter in the north.