{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Planets icy dwarf planets surrounding jovian worlds

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Some carbonaceous material, ices • Lower-density Jovian planets, icy dwarf planets surrounding Jovian worlds • Outer reaches of system • Icy comets, dwarf planets (e.g. Eris-Dysnomia) Terrestrial Planets: Mercury ! ! ! ! ! Orbit: Diameter: Density: No atmosphere Silicates, with a large Ni-Fe core • • ! ! 0.38 AU 4,880 km 5.43 g/cc 3,600 - 3,800 km diameter core Weak magnetic field (1% of Earth’s) High concentration of heavy elements, metals Very low (near zero) volatile content Terrestrial Planets: Venus ! Orbit: Diameter: Density: ! Heavy atmosphere ! ! • • ! 90 atmosphere pressure at surface Principally CO2, minor N2 Low volatile content • • • ! 0.72 AU 12,103 km 5.52 g/cc Atmosphere retained by higher gravity than Mercury Originally higher water content, lost by photolytic ionization of H2O in upper atmosphere, and subsequent gravitational loss of H2 Oxygen from H2O breakdown captured through oxidation of volcanic H2S to H2SO4 (sulfuric acid) Active volcanism • • • • Larger size allows retention of radiogenic heat in interior Slightly higher concentration of U than Earth, most likely No plate tectonics - lack of water prevents asthenosphere formation Catastrophic resurfacing ever...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern