Earth Sciences 1086F/G Lecture Notes - Lecture 5: Plutonium, Rings Of Saturn, Christiaan Huygens
8 Dec 2017
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Increased gravitational attraction would make it easier to attract more volatiles and liquids. In early solary system, neptune would pass protoplanet to uranus, which would pass it to saturn, then jupiter which would either assimilate it, or throw" it towards the sun past the terrestrial planets: eventually their orbits stabilized. Comet impact on jupiter: jupiter gets hit by more comets than most planets. 2017-11-25: comet showmaker-levy 9 hit jupiter in 1994. Orbit and rotation: ~3 degrees of obliquity, as opposed to ~23 degrees tilt for earth, very fast rotational period ~10 hours, compared to 24 hours on earth, has a detectable oblateness (i. e. bulges slightly at equator) 2017-11-25: jupiter"s magnetosphere also produces auroras similar to earth"s. No hard surface = no geology; but jupiter"s satellites have observable geology. Some irregular satellites: fifth satellite found is amalthea, imaged by voyager 1, but discovered by the lick refractor telescope.
