2. Saturn Very much like Jupiter Belts and zones Belts and zones Storms last for days or months Storms last for days or months Wind speed at equator: 1800 km/h Wind speed at equator: 1800 km/h Photo: NASA/JPL-Caltech/Space Science Institute/G. Ugarkovic

3. Saturn Fastest winds Emits more radiation than received 25% more than Jupiter Helium rain Photo: NASA/JPL/Space Science Institute

4. Saturn’s Rings Names – A, B, C, D, F, etc. Photo: NASA/JPL-Caltech/Space Science Institute AABBCC

5. Saturn’s Rings Names – A, B, C, D, F, etc.

6. Saturn’s Rings Inner parts orbit more quickly than outer parts Inner parts orbit more quickly than outer parts Made of closely-spaced ringlets (hundreds) Made of closely-spaced ringlets (hundreds) Most “gaps” are fine dust particles of coated ice. Most “gaps” are fine dust particles of coated ice.

7. Saturn’s Rings Composition Mainly water ice Ice-covered rocky debris Photo: NASA/JPL

8. Saturn’s Rings Particle Sizes In A & B rings: few centimeters to tens of meters Pebbles to house-sized Most are snowball-sized Outermost: smoke-sized Photo: NASA/JPL

9. Saturn’s Rings Rings do not mix. Photo: NASA/JPL/Space Science Institute

10. Saturn’s Moons Moons affect rings Photo: NASA/JPLJanus, Pandora, Enceladus, Mimas, Rhea

11. Saturn’s Moons Mimas Photo: NASA Planetary Photojournal

12. Saturn’s Moons Mimas Photo: Lucasfilms Limited

13. Saturn’s Moons Mimas Photo: NASA/JPL/Space Science Institute

14. Saturn’s Moons Mimas Gravitational pull helps keep Cassini division clear Photo: NASA/JPL-Caltech/Space Science Institute

15. Saturn’s Moons Pan Orbits within the Encke Gap Orbits within the Encke Gap Keeps it clear Keeps it clear Photo: NASA/JPL-Caltech/Space Science Institute?G. Ugarkovic

16. Saturn’s Moons Shepherd Moons Prometheus (inner moon) Causes particles to speed up Causes particles to speed up Gain energy Gain energy Further orbits Photo: NASA/JPL

17. Saturn’s Moons Pandora (outer moon) Causes particles to slow down Lose energy Fall into closer orbits Photo: NASA/JPL-Caltech/Space Science

18. Saturn’s Moons Photo: NASA/JPL-Caltech/Space Science

19. Saturn’s Moons Photo: NASA/JPL-Caltech/Space Science Pandora Pandora Photo: NASA/JPL/SSI

20. Saturn’s Moons Titan Second largest moon (Also larger than Mercury) Made of rock and ice Only moon with much of an atmosphere Photo: NASA/JPL-Caltech/Space Science Institute

21. Saturn’s Moons Titan Composition: Methane (CH 4 ) – 98% Nitrogen (N 2 ) – 2% Photo: NASA/JPL-Caltech/Space Science Institute

22. Saturn’s Moons Titan Rains methane Lakes in the north Photo: NASA/JPL/University of Arizona/DLRJingpo Lacus, by Kraken Mare

23. Works Cited Allison, Mead A., Arthur T. DeGaetano, and Jay M. Pasachoff. Earth Science. Austin: Holt, Rinehart and Winston, 2007. Print. Lutgens, Alan K., Edward J. Tarbuck, with illustrations by Dennis Tasa. Foundations of Earth Science, Sixth Edition, Upper Saddle River: Pearson Prentice Hall, 2011 Freedman, Roger A., Kaufmann III, William J. Universe, 6 th Edition. New York: W. H. Freeman and Company, 2002