ASTR 151 1st Edition Lecture 25 Outline of Last LectureI. ReviewII. Chapter 11.5III. Chapter 11.6Outline of Current LectureIV. Chapter/ Sections ReviewV. Chapter 12 SaturnVI. Chapter 12 Section 1 Physical PropertiesVII. Chapter 12 Section 2 Saturn`s AtmosphereVIII. Chapter 12 Section 3 Saturn`s Magnetosphere/ InteriorIX. Chapter 12 Section 4 Ring SystemCurrent LectureI. Chapter/ Sections Reviewa. Jupiter`s composition resembles the SunII. Chapter 12 Saturna. Cronus- Greek Mythi. Son of Jupiterb. Shani- Hindu (Santa)c. Saturnus- God of agriculture, wealth, and time- Roman Godi. Origin behind Saturdayd. Can be seen with the naked eyei. 1610 Galileo saw the planet but not it`s ringsii. 1655 Christian Huygens proposed the ring`s existenceiii. 1675 Cassini saw gaps in the ringsIII. Chapter 12 Section 1 Physical PropertiesThese 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.a. Mass= 5.7*10^26b. Radius=60,000 kilometerc. Density=700 kg/m^3d. Rotation Rapid and differential, enough to flatten Saturne. Surface Gravity=1.065gf. Has Magnetic fieldsg. Has 62 Moonsh. Has atmospherei. Eccentricity of orbit is .056j. 1 0rbital rotation=29.5 earth yearsk. Rotation period=10.57hoursl. Flattening=. 097m. Ringsi. There view changes in relation to Saturn`s position to the Sunii. Mostly made of Water IceIV. Chapter 12 Section 2 Saturn`s AtmosphereV. Chapter 12 Section 3 Saturn`s Magnetosphere/ InteriorVI. Chapter 12 Section 4 Ring Systema. D, C, B, Cassini Division, A, and F ringi. Similar to 81/2=> 21 Earth in it`s apparent sizeb. Structurei. Range from millimeters to tenths of a meterii. Roche Limit1. Best distance that the moon could survive2. Ring system is within the limit3. Things outside would be torn apart due to tidal forcec. Voyager probes showed Saturn`s rings to fan out fartheri. F, G, and E rings are fairly faintii. Also found spikes: F-ring has braids and kinksd. Moonsi. Known as “shepherd Moons”e. Origini. Too active to have lasted since solar system birthii. Some portions are older than othersiii. They`re either replenished or are continuing to form over
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