GEO 303 Lecture Notes - Lecture 31: Sulfur Dioxide, Gas Torus, Galilean Moons
23 Dec 2017
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Document Summary
The only moon in the solar system known to possess its own internally-generated. It"s magnetic field is thought to be generated by convection in its molten iron core, just like earth. It also has a very tenuous atmosphere composed of . The combination of a magnetic field & an atmosphere results in . Oxygen is released from the surface by the . The hydrogen escapes into space, the the oxygen escapes more slowly, resulting in a. Water ice has many different forms or crystal structures depending on pressure. Denser than ganymede & callisto, suggesting it is made primarily of rock, rather than. It has an icy surface that is only lightly cratered & which is covered w/ a very complex. Young, sparsely cratered, complex terrains suggest it"s surface may have been reworked. Evidence has not yet been found, but a number of structures look suspicious , networks of cracks, ridges, & grooves by .
