NATS 3-24 - March24th Nats102 1. Saturnsmoons a. Enceladus...

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March 24 th Nats 102 1. Saturn’s moons a. Enceladus i. Small moon ii. Has water geysers iii. Few craters iv. Geologically active b. Mimas c. Tethys d. Dion e. Rhea f. Lapetus 2. Uranian moons a. Many of these show evidance for volcanism and other geological activity b. Like jovian moons, made largely of ice 3. Neptune’s moons a. triton if Neptune’s largest moon; Nereid still fairly sizeable b. tritons orbits backwards, no in Neptune’s rotations plain, probably captured orbited sun before c. was once geologically active has a thin atmo d. probably tidally heated in past 4. Rings a. Rings bade of small particles of dust that cam reflect sunlight b. Maybe largest particles too [pebbles and boulders] c. All have nearly circular orbits, obey keplers laws d. Frequently collisions between particles e. All of jovian planets have rings f. Origin of rings i. Rings cant survive for age of solar system: replenished ii. Source is thought to be grinding down of small moons by impacts iii. Old idea: tidal disruption of asteroids or moons too infrequent
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NATS 3-24 - March24th Nats102 1. Saturnsmoons a. Enceladus...

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