ASTR 151 1st Edition Lecture 27 Outline of Last Lecture I Explorations II Chapter 12 Section 2 Atmosphere III Chapter 12 Section 3 Magnetosphere Interior Outline of Current Lecture IV Chapter 12 Review V Chapter 12 5 VI Chapter 12 Summary Current Lecture I Chapter 12 Review a Saturn s atmosphere is 90 hydrogen b Which Saturn moon has water i Enceladus c Saturn s moons aren t bigger than Jupiter s i One of the largest moons is called Titan d What gives Jupiter and Saturn excess energy i On going contraction of both planets II Chapter 12 5 Saturn s Moons a Regular 24 7 major moons b Small moons share orbits but doesn t collide with each other c Trojan objects d Shepherd Moons i Titan 1 Made of Nitrogen 2 Only moon with an atmosphere These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute 3 Radius is half of Earth s 4 Density 1 9kg m 3 less than water 5 Atmosphere is thicker than Earth s 6 Average temperature 93 7K 7 Huygens spacecraf a Landed on Titan and returned with images 8 Interior a Rock and icy core b High pressure ice 9 Lakes a Ethane lake or methane b Only object to have ambient temperature liquid on surface c Maybe hydrocarbons organic compound 10 All between 3 9 planetary radii are tidally locked 11 Two small moons share the same orbit ii Enceladus 1 14th satellite by distance orbits by the E ring 2 Seems youthful 3 Cry o volcanoes a Has cold Geysers b Found by looking at the gravity and change on the satellite 4 Tiger stripes a Fractures in the ice III Chapter 12 Summary a Rings b Least dense planet in the solar system c 2nd in mass size and wind speed d 2nd largest moon in the solar system
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