ASTRO-110 Lecture Notes - Lecture 19: Galilean Moons, Tidal Locking, Radar Imaging
Document Summary
The galilean moons: the four galilean moons of jupiter showcase most of what is unusual and unexpected about the jovian moons. Orbital resonances: every one time europa orbits, io orbits twice. Less craters on a surface means it is younger. There are no signs of impact cratering on its surface they"ve all been eliminated from geological activity. Io is the most volcanically active world in our solar system. Io"s volcanic activity is driven mostly by heat from the jupiter-io tidal force. Io has numerous active volcanoes, some erupting with plumes rising hundreds of kilometers. Europa"s surface is also nearly devoid of craters, but no volcanoes. It has a rocky core, but it is surrounded by an icy crust (water ice) Europa"s crust is crisscrossed by cracks and, up close, looks like a jumble of icebergs that have frozen into a sea of slush.
