The four jovian planets are accompanied by impressive systems of moons and rings. Of the four ring systems, Saturn’s is the largest and is composed primarily of water ice; in contrast, Uranus and Neptune have narrow rings of dark material, and Jupiter has a tenuous ring of dust

Over 410 moons have been discovered in the outer solar system. Jupiter’s largest moons are Ganymede and Callisto, both low-density objects that are composed of more than half water ice.

largest and — composed primarily of water ice; in contrast, Uranus and Neptune have narrow rings of dark material, and Jupiter has a tenuous ring of dust. four jovian planets — accompanied by impressive systems of moons and rings. resonance — an orbital condition in which one object is subject to periodic gravitational perturbations by another, most commonly arising when two objects orbiting a third have periods of…. tidal heating — the heating of a planet or moon’s interior by variable tidal forces caused by changing gravitational pull from a nearby planet or moon.

Be able to describe the basic composition of each jovian planet’s ring system; describe the major features we can observe about Callisto and what we can deduce from them; explain the evidence for tectonic and volcanic activity on Ganymede.