AST101H1 Lecture Notes - Eris (Dwarf Planet), Kuiper Belt, Moons Of Saturn
15 Mar 2014
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AST101H1 Full Course Notes
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Their clouds are white, but methane in their atmospheres absorbs red light, so the planets look blue. Ganymede (jupiter) is nearly the same size as mars. Callisto (jupiter) - about the same size as mercury. Io (jupiter) - smoldering pool of lava - volcanoes all the time. Europa (jupiter) - very young surface - Eris (dwarf planet) - largest kuiper belt object. Other objects comparable in size are mercury, the moon, and pluto. Past or current geological activity, prograde orbits (except triton, moon of neptune, which orbits the wrong way. These moons must have formed from a little disk or nebula. No geological activity, irregular shapes, some on irregular orbits. Io has volcanoes - tyashtar plume - plume of molten sulfurous compounds. Europa has a surface of ice and a few craters. Rocky interior, metallic core, and h20 layer with an ice covering. Ice rafts on europa indicate geologic activity.
