Exploring Saturn - another gas giant

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Class 17 Uranus, Neptune, Pluto
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Class 17 Uranus, Neptune, Pluto
Class Updates Reading 23.4-23.7 Homework
4 posted due Thurs., Oct 28th Midterm
Thurs., Nov 2nd
Todays topics Uranus Neptune Pluto
Pluto
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Uranus, Neptune, and Pluto
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Solar System Distances
Planets not to scale Distances not to scale
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Uranus A Global Perspective
Orbit 365 days 84.01 years
Satellites 1 27
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Exploring Uranus
Herschel
Uranus moons
Voyager 2
Hubble Space Telescope
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Uranuss Interior
(1)
(2)
core
METHANE
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Axis of Rotation
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Atmosphere Magnetic Field
ultraviolet
magnetic axis
visible
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The Rings of Uranus
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The Moons of Uranus
Oberon (2nd largest)
Total 27
Titania (largest)
r 789 km
Umbriel
Miranda
Puck
Ariel
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Neptune
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Neptune A Global Perspective
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Exploring Neptune
Adams
Le Verrier
Galle
Voyager 2
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Neptunes Interior
(1)
H, He, CH4
(2)
H2O, CH4, NH3
core
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Neptunes Atmosphere Clouds
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The Great Dark Spot
Voyager 2
Voyager 2
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Neptunes Rings Moons
faint rings
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A Parting Look
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Pluto
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Pluto A Global Perspective
Differences
Size (radius) 6378 km 0.2x Earth
Mass 6x1024 kg 0.002x Earth
Density 5.5 g/cm3 0.4x Earth
Atmosphere 78 N2 21 O2 probably
N2, thin
Surface temperature 20C -220C
Rotation 1 day 6.4 days Orbit 365
days 248 years
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Exploring Pluto
Tombaugh, Lowell Observatory
Charon
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Plutos Elliptical Orbit
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Pluto Is it a planet?
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Real Planets Dwarf Planets
Eris
Pluto
Ceres
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Plutos Size Interior
core
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Pluto - Charon System
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Pluto and Charon from Hubble
Bright/dark regions differences in
methane/nitrogen frost cover
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New Horizons Mission