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Notes on video lecture:
Comparative Planetology
Notes taken by Edward Tanguay on January 5, 2016 (go to class or lectures)
Choose from these words to fill the blanks below:
life, debris, helium, habitable, 90%, ices, development, Oort, hydrogen, volcanoes, frozen, iron, Jupiter, ammonia, planet, mud, spinning, gravity, cement, habitability, variation, plane, Mars, dwarf
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comparative planetology
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we see a remarkable                    of planets even in our own solar system
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various forces drive the formation and                        of planets, enables us to understand
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does the planet have moons, are those moons                   
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each planet has a different story
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each planet has certain possibilities for a home for         
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long term
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short term
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our planetary system
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three flavors of planets
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1. terrestrial
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rocky planets
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the inner planets closest to the Sun
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Mercury, Venus, Earth, and         
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have a solid planetary surface, making them substantially different from the larger giant planets, which are composed mostly of some combination of                 , helium, and water existing in various physical states
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a central metallic core, mostly         , with a surrounding silicate mantle
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silicates comprise the majority of Earth's crust, as well as the other terrestrial planets, rocky moons, and asteroids
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sand, common             , and thousands of minerals are examples of silicates
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have canyons, craters, mountains,                   , and other surface structures, depending on the presence of water and tectonic activity
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2. gas giants
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Jupiter, Saturn
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enormous
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may or may not be a rocky core
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built of a simple material, although in different states
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composed mainly of hydrogen and             
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3. ice giant
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Uranus, Neptune
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large compared to the Earth
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much of their material is locked up in         
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a mix of gases and ices in different states
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consist of only about 20% hydrogen and helium in mass, as opposed to the gas giants (Jupiter and Saturn), which are both more than        hydrogen and helium in mass
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outermost portion of their hydrogen atmosphere is characterized by many layers of visible clouds that are mostly composed of water and               
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moons
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all planets in our solar system have moons except for Mercury and Venus
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Mercury = 0
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Venus = 0
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Earth = 1
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Mars = 2
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               = 16
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Saturn = 19
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Neptune = 8
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Uranus = 15
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debris
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material left over from the development of the solar system
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           planets
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Pluto
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Xena
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2005 FY9
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2003 EL61
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Sedna
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Quaoar
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quite spherical, but not as large as a             
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they have not done much in terms of their gravity vacuum up material around them
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one of the characteristics of a planet
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the ability of the object's gravity to clear out a gap around it
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asteroids
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planetesimal
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small enough that they did not become spherical
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not enough                to take their mass and crush it down under its own weight
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essentially these are large, floating rocks
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comets
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debris left over from the solar system
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tends to be much more              water in these than in, e.g. asteroids
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a mix of frozen water and rocks
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"slushy        balls"
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structure of the solar system
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they are all orbiting in the same           
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all the planets and most of the construction              is orbiting in a disc
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some of the planets have slight inclinations but pretty much all are aligned in a single disc of rotation
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the planets are pretty much all spinning in the same direction
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also                  in the same direction as the Sun is spinning
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belts of debris
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1. Asteroid Belt
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2. Kuiper Belt
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beyond the orbit of Neptune
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storage area for comets
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3.          Cloud
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storage area for comets

Spelling Corrections:

planetasmal ⇒ planetesimal
Orders of Magnitude
Comparative Planetology