ASTR 1110 book summary - ch.7.1 - Astronomy Book Notes 7.1...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Astronomy – Book Notes 7.1 Studying the Solar System - Comparative Planetology: The study of the solar system by examining and understanding the similarities and differences among worlds. What does the solar system look like? - All planets orbit the Sun in the same direction and in nearly the same plane - The four inner planets are much smaller and closer together than the next four planets. - Most of the planets have nearly circular orbits - Small white circles around all the planets except Mercury and Venus (which have no moons) show that most major moons orbit their planets in the same direction that their planets rotate. What are the major features of the Sun and planets? - The Sun: o Radius: 695,000 km = 108 R EARTH o Mass: 333,000 M EARTH o Composition (by mass): 98% hydrogen and helium, 2% other elements - Mercury o Average distance from the Sun: 0.39 AU o Radius: 2,440 km = 0.38 R EARTH o Mass: 0.055 M EARTH o Average density: 5.43 g/cm^3 o Composition: rocks, metals o Average surface temperature: 700 K (day), 100 K (night) o Moons: 0 - Venus o Average distance from the Sun: 0.72 AU
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the 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