| 1. Episode 10 Measuring Distance in th | not rated | 30:12 |
| 2. Episode 11 A Universe of Dark Energ | not rated | 27:27 |
| 3. Episode 12 Where Do Baby Stars Come | not rated | 26:49 |
| 4. Episode 13 Where do stars go when t | not rated | 26:06 |
| 5. Episode 14 We're All Made of Supern | not rated | 25:00 |
| 6. Episode 15: Listener Questions Answered | not rated | 29:40 |
| 7. Episode 16 Across the Electromagnet | not rated | 30:31 |
| 8. Episode 17 Where does the Moon Come | not rated | 23:41 |
| 9. Episode 18: Black Holes Big and Small | not rated | 26:30 |
| 10. Episode 19 Comets, Our Icy Friends | not rated | 26:30 |
| 11. Episode 1 Pluto's Planetary Identit | not rated | 26:16 |
| 12. Episode 20 What We Learned from the | not rated | 24:12 |
| 13. Episode 21 Black Hole Questions Answ | not rated | 33:00 |
| 14. Episode 22: Variable Stars | not rated | 28:50 |
| 15. Episode 23 Counting Aliens With the | not rated | 31:28 |
| 16. Episode 24 Fermi Paradox 1 | not rated | 29:22 |
| 17. Episode 24 Fermi Paradox | not rated | 29:22 |
| 18. Episode 24 The Fermi Paradox Where | not rated | 29:22 |
| 19. Episode 25 How Galaxies Form 1 | not rated | 29:02 |
| 20. Episode 25 How Galaxies Form | not rated | 29:02 |
| 21. Episode 27 The Third Question Show | not rated | 40:59 |
| 22. Episode 28 What is the universe exp | not rated | 27:43 |
| 23. Episode 29 Asteroids Make Bad Neigh | not rated | 31:07 |
| 24. Episode 2 In Search of Other Worlds | not rated | 30:13 |
| 25. Episode 30 The Sun, Spots and All | not rated | 26:06 |
| 26. Episode 31 String Theory, Time Trav | not rated | 29:01 |
| 27. Episode 32 The Search for Neutrinos | not rated | 29:05 |
| 28. Episode 33 Choosing and Using a Tel | not rated | 31:55 |
| 29. Episode 34 Discovering Another Eart | not rated | 28:38 |
| 30. Episode 35 Questions Show #4 | not rated | 30:56 |
| 31. Episode 36 Gamma-Ray Bursts | not rated | 29:28 |
| 32. Episode 37 Gravitational Lensing | not rated | 26:49 |
| 33. Episode 38 Neutron Stars and their | not rated | 30:53 |
| 34. Episode 39 Astrology and UFOs | not rated | 34:47 |
| 35. Episode 3 Hot Jupiters and Pulsar P 1 | not rated | 27:01 |
| 36. Episode 3 Hot Jupiters and Pulsar P | not rated | 27:01 |
| 37. Episode 40 American Astronomical So | not rated | 26:46 |
| 38. Episode 41 The Rise of the Supertel | not rated | 30:34 |
| 39. Episode 42 Magnetism Everywhere | not rated | 28:22 |
| 40. Episode 43 Questions, Questions #5 1 | not rated | 33:08 |
| 41. Episode 43 Questions, Questions #5 2 | not rated | 33:08 |
| 42. Episode 43 Questions, Questions #5 | not rated | 33:08 |
| 43. Episode 44 Einstein's Theory of Gen | not rated | 31:37 |
| 44. Episode 45 The Important Numbers in | not rated | 26:09 |
| 45. Episode 46 Stellar Nurseries | not rated | 27:32 |
| 46. Episode 47 Tidal Forces | not rated | 28:01 |
| 47. Episode 48 Tidal Forces Across the | not rated | 25:36 |
| 48. Episode 49 Mercury 1 | not rated | 34:59 |
| 49. Episode 49 Mercury | not rated | 32:14 |
| 50. Episode 4 The Search for Dark Matte 1 | not rated | 28:28 |
| 51. Episode 4 The Search for Dark Matte | not rated | 28:28 |
| 52. Episode 5 The Big Bang and Cosmic M 1 | not rated | 28:46 |
| 53. Episode 5 The Big Bang and Cosmic M | not rated | 28:46 |
| 54. Episode 6 More Evidence for the Big 1 | not rated | 28:46 |
| 55. Episode 6 More Evidence for the Big | not rated | 28:46 |
| 56. Episode 7 Getting Started in Amateu | not rated | 22:23 |
| 57. Episode 8 Meteor Showers. Yes, the | not rated | 28:46 |
| 58. Episode 9 Einstein's Theory of Spec | not rated | 31:09 |
| 59. Listener Survey | not rated | 0:48 |
| 60. Special Alert Go See Comet McNaught | not rated | 6:48 |
| 61. Episode 26: The Largest Structures in the Universe | not rated | 27:04 |
| 28:44:16 |
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