AS101 Chapter Notes - Chapter 14: Galilean Moons, Roche Limit, Dwarf Planet
Document Summary
1930 until the iau decided in 2006 to reclassify it as a dwarf planet: only saturn"s bright and beautiful rings are visible from earth (composed of billions of ice particles, the rest of the planets also have rings. Ice giants uranus and neptune are rich in water in both solid and liquid forms. Satellite systems: can"t land a spaceship on these planets, however can on their extensive set of moons, some of the moons are geologically active (heat flow from the interior) while others show past activity. Its gravitational influence on galileo spacecraft reveals there is a liquid- water ocean, perhaps 200km deep. It is not as active as io but it too must have a heat source, presumably tidal heating. It"s gravitation influence on galileo spacecraft reveals that it is differentiated into a large metallic core, a rocky mantle and a low-density crust.
