Unformatted text preview: ation is cleared out of the inner solar system, leaving us with the asteroid belt, the Kuiper belt and the Oort cloud as the final remnants of the formation process.
27 NATURE of the Universe Astronomy - The Solar System Summary Summary: The Solar System 4 inner planets are terrestrial planets (rocky, with a higher density), 4 outer planets are Jovian planets (gaseous with rocky cores and a lower density) All planets orbit the Sun in the same direction and in a plane close to the ecliptic. This traces back to the formation of the solar system. Asteroid belt, Kuiper belt and the Oort cloud are remnants of the formation of the solar system. The solar system evolved out of a rotating, contracting cloud of gas and dust about 4.6 billion years ago. 28 NATURE of the Universe Astronomy - The Solar System Homework Homework Reading assignment: Chapter 5.1, 5.2, 5.8, E.3 Homework 2 is online. Due date is Mo, Oct 16 at 12:00 pm (noon) Think about: How did the Earth get its Moon? How would life on Earth be without the Moon? 29 NATURE of the Universe Astronomy - The Solar System Announcements Extra Credits - 2nd opportunity to earn extra credits (1.5%): write an Essay Topics are now online under "notes" on the class web page Select one topic Write an Essay (about 1,500 words) Try to write the essay in a "dialectic" style. Start with a brief introduction
to the topic, then list theses ("pros") and counter them by antitheses ("cons"), and close with your own conclusions. 30 The list of essay topics is available at http://web.physics.ucla.edu/class/06F/3_BRANDNER/ notes/index.html NATURE of the Universe Astronomy - The Solar Sy...
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