Lecture 15

Lecture 15 - oday(Friday in oday(Friday in Astro Astro 3 3...

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Unformatted text preview: oday (Friday) in oday (Friday) in Astro Astro 3 3 z Today: Í Brief review of Chapter 8 “Moons, Rings, and Pluto” Í Chapter 9 “The Sun” z Cell phones off now, please z Online quiz #5 covering chapters 8 and 9 due Monday by 10 p.m. Class #15 Summary of Chapter 8 – Part 1 • Outer solar system has six large moons, 12 medium-sized ones, and many smaller moons • Galilean moons of Jupiter are quite interesting: • Io is the most volcanically active object in the solar system. • Europa probably has a deep, liquid water ocean under its icy crust . • Ganymede and Callisto may also have subsurface oceans. • Tidal heating as they “flex” keep them warm inside • Titan has a thick atmosphere and may have flowing rivers of methane • Triton has active geology (e.g. nitrogen geyser) Medium & large moons • Enough self-gravity to be spherical Jupiter’s Galilean moons Io Europa Ganymede Callisto Tidal Heating Saturn’s Titan, and Neptune’s Triton Saturn’s Titan : a thick and smoggy atmosphere, liquid ethane or methane lakes and rivers Neptune’s Triton: continual geologic activity Summary of Chapter 8 – Part 2...
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Lecture 15 - oday(Friday in oday(Friday in Astro Astro 3 3...

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