| Title | Date published | ||
| Lecture 41: Planetary Rings | 2006-11-22 | ||
| Lecture 42: Asteroids and Meteoroids | 2006-11-27 | ||
| Lecture 43: Icy Worlds of the Outer Solar System | 2006-11-28 | ||
| Lecture 44: Comets | 2006-11-29 | ||
| Lecture 45: Is Pluto a Planet? | 2006-11-30 | ||
| Lecture 46: ExoPlanets - Planets around Other Stars | 2006-12-01 | ||
| Astronomy 141 Podcast Teaser | 2009-12-06 |