Astr 1050    Wed., Dec. 11, 2002

Chapter 18: Worlds of the Outer Solar System

Jovian Planets

Ice+Rock Core    H+He “Atmosphere”

Details of the atmosphere

Jupiter as seen by Cassini

Winds on Jupiter

Jupiter-Cassini Movie   Mercator Projection

Winds near the Great Red Spot

Air circulation for very slowly rotating planet

Slide 11

Slide 12

Slide 13

Slide 14

Slide 15

Hurricanes exist because
Low Pressure trying to turn winds to the left
almost balance
Coriolis Force trying to turn winds to the right.

Comparison of atmospheres

Jupiter has multiple cloud decks as air rises in low pressure “zones”

Magnetic fields and trapped particles

Satellites orbiting through radiation belts lose particles which become ionized and trapped.

Aurora on Jupiter

Jovian Planets

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

Possible H2O ocean on Europa

Callisto not active

Comparison of Satellites

Titan

Triton