Chapter 16: Origin of the Solar System
Equilibrium Condensation Model
Evidence of Assembly Process? Craters
Craters evident on almost all small “planets”
Chapter 17: Terrestrial Planets
Four Stages of Planetary Development
Earth’s Atmosphere: Greenhouse Effect
Examples of craters on the moon
Expect Venus to be
similar to Earth?
(It isn’t!)
Why does Venus have much more CO2 in atmosphere than Earth?
Surface Relief of Venus from Radar
Lots of Martian Science Fiction
Mars and the Pattern of
Geologic Activity
and Atmospheric Loss
Which planets can retain which gasses?
Ancient River
Channels?
(note channels older than some craters – by superposition)
Recent liquid water?
(water seeping out of underground “aquifer” ?)
Chapter 18: Worlds of the Outer Solar System
Ice+Rock Core H+He “Atmosphere”
Magnetic fields and trapped particles
Saturn as seen by the Hubble Space Telescope
The Roche Limit
When can tides tear a moon apart?
Rings are individual particles all orbiting separately
Jupiter as a miniature solar system
Io, Europa break rules about activity
Tidal heating explains activity
Chapter 19: Meteorites, Asteroids, Comets
Phobos & Deimos: Two “misplaced” asteroids?
Large Meteor over the Tetons (1972)
Comets: Hale-Bopp in April 1997
Hale-Bopp clearly shows components
Where do comets come
from?
Long period comets: The Oort Cloud