Astr 1050    Fri., Dec. 13, 2002

Homework #11

Comparison of Jovian Planets

Effects of T (and E) on Atmospheres

Implications of M, r for nebula

The Jovian planets are miniature solar systems

The Roche Limit
When can tides tear a moon apart?

Saturn as seen by the Hubble Space Telescope

Rings are individual particles all orbiting separately

Resonances:  Properly timed gravitational “pushes”

Cassini division at 1:2 resonance with Mimas

Comparison of Rings

Jupiter as a miniature solar system

Io, Europa break rules about activity

Tidal heating explains activity

Probable H2O ocean on Europa

Callisto not active

Comparison of Satellites

Titan

Triton

Chapter 19:  Meteorites, Asteroids, Comets

Asteroids

Meteorites from Asteroids

The larger asteroids

Asteroid Belt Structure

Are Asteroids Primitive?

Another Galileo Asteroid:  Gaspra

Phobos & Deimos:  Two “misplaced” asteroids?

Clues from Meteorites

Types of asteroids observed

Origin of different asteroid types

Meteors vs. Meteorites

Large Meteor over the Tetons (1972)

The Leonids  2001

Meteor Showers and Comets

Comets:         Hale-Bopp in April 1997

Comet characteristics

Comet structure

Hale-Bopp clearly shows components

Where do comets come from?
Long period comets:  The Oort Cloud

Formation of Oort cloud comets

Where do the Jupiter family comets come from?:
  The recently discovered Kuiper Belt

Importance of comets

Chapter 16-19 Review

Chapter 16-19 Review

Chapter 16-19 Review

Chapter 16-19 Review

Chapter 16-19 Review

Chapter 16-19 Review

Final Exam

Final Exam