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Lecture 13

Lecture 13 - The Formation and Age of the Solar System - October 22.docx

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Astronomy & Astrophysics
Michael Reid

October 22, 2013. Lecture 13 - The Formation and Age of the Solar System The Nebular Hypothesis/Theory  1. More gaseous bodies (Jovian planets) are farther away from the sun and terrestrial bodies are closer  2. Planets all orbit in the same direction  prograde o Moons mainly orbit prograde o Planets mainly rotate prograde  Except for Venus and Uranus  Asteroid belt in between Mars and Jupiter o A true asteroid field is actually pretty empty despite thousands of asteroids (lots of space between them)  Kuiper belt around solar system  Oort cloud sphere around solar system, far outside the Kuiper belt  The interstellar medium (ISM) fills space between the stars o Has dense parts, called molecular clouds  Might be the initial stages of new stars forming
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