Astronomy 1021 Chapter Notes - Chapter 8: Solar Wind, Water Cycle, Galilean Moons
15 May 2020
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What are jovian planets made from: general composition. Jupiter = failed star star-like composition but lacks nuclear fusion (n/a brightness) Helium: composition primarily h20, ch4, nh3, the jovian planets farther from the sun took longer to form and captured less hydrogen. + helium gas explaining why uranus and neptune have larger proportions of hydrogen compounds, rock and metal: density differences, the extra mass of jupiter compresses its interior to a much higher density. If more gas were added to jupiter, the planets interior would compress and shrink in size. Io torus: saturn"s magnetic field = weaker than jupiter thinner layer of metallic h, uranus and neptune = n/a metallic h = weak magnetic field. What kind of moon"s orbit the jovian planets: 170 moons orbiting jovian planets jupiter/saturn have the most (each 60+ moons, small moons: 300km diameter, medium moons: 300-1500km diameter, large moons: 1500+ km diameter.
