1. ASTR 2310: Chapter 8 Overview of Solar System – Two types of planets – Physical properties of planets Temperatures, densities, albedos, etc. – Retention of atmosphere – Solar System Formation Protoplanetary disks, condensation, etc. Post formation processes (catering, volcanoes)

2. ASTR 2310: Chapter 8 What is wrong with this picture? It's from NASA...

3. ASTR 2310: Chapter 8 Characteristics of the Planet Types TerrestrialJovian – MassLow (upto Earth)High (10x) – CompositionRocky/MetalGaseous High density Low density – Rotation slow – day+fast < 18hr – SatellitesFewMany – Orbital radius 5AU

4. ASTR 2310: Chapter 8 Planet Masses – How? Planet Sizes – How? Planet Densities – How? Planet Temperature more involved... – I'll do it on the board, also see text and wiki for blackbodies as advertised..

5. ASTR 2310: Chapter 8 Albedos and graph presentation lesson: – http://www.numberpix.com/2006/04/reflections_on_the_planets_1.ht ml http://www.numberpix.com/2006/04/reflections_on_the_planets_1.ht ml – Never too early to learn this stuff!

6. ASTR 2310: Chapter 8

7. Spectrum of Mars:

8. ASTR 2310: Chapter 8 Planetary escape velocity, gas temperature, and gasses

9. ASTR 2310: Chapter 8 Protoplanetary Disks:

10. ASTR 2310: Chapter 8 Cratering and Volcanic Flooding – Mercury is very much like the moon – Venus has active volcanoes, surface hidden by clouds but not radar – Nice website from Guy Worthey* at WSU: – http://astro.wsu.edu/worthey/astro/html/lec- mercvenus.html http://astro.wsu.edu/worthey/astro/html/lec- mercvenus.html – *A Wyoming graduate