With four large moons and many smaller moons, Jupiter forms a kind of miniature solar system. Jupiter has 80 moons. Fifty-seven moons have been given official names by the International …

Saturn is nearly twice as far from the sun as Jupiter, and yet Saturn’s rings are so big and brilliant that Galileo discovered them the same year he spotted Jupiter’s moons. Cassini watched …

Sep 15, 1998 · Jupiter's intricate, swirling ring system is formed by dust kicked up as interplanetary meteoroids smash into the giant planet's four small inner moons, according to …

Jupiter's menagerie of moons includes the largest in the solar system (Ganymede), an ocean moon (Europa) and a volcanic moon (Io). Many of Jupiter's outer moons have highly elliptical …

On November 12, 1980, 35 years ago, Voyager 1 became the second spacecraft to flyby Saturn. Its main objectives were to conduct close-up studies of Jupiter and Saturn, Saturn’s rings, and …

Saturn and Jupiter are unrivaled in our solar system for the sheer number of moons captured in their orbits. NASA's Solar System Exploration Website tells the story of each of Saturn's …

Cassini is a robotic spacecraft that arrived at Saturn on July 1, 2004 Universal Time (June 30 in U.S. time zones), and has orbited the planet ever since, studying its famous rings and family of …

From the haze-shrouded surface of Titan to crater-riddled Phoebe, each of Saturn's moons tells another piece of the story surrounding the Saturn system. Saturn has 83 moons. Sixty-three …

Jupiter orbits about 484 million miles (778 million kilometers) or 5.2 Astronomical Units (AU) from our Sun (Earth is one AU from the Sun).

Apr 6, 2015 · Perhaps the most surprising water worlds are the five icy moons of Jupiter and Saturn that show strong evidence of oceans beneath their surfaces: Ganymede, Europa and …