| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | Death Stars |
August 18, 2009
History
|
60 | |
| S04E02 | The Day the Moon Was Gone |
August 25, 2009
History
|
60 | |
| S04E03 | It Fell from Space |
September 1, 2009
History
|
60 | |
| S04E04 | Biggest Blasts |
September 8, 2009
History
|
60 | |
| S04E05 | The Hunt for Ringed Planets |
September 15, 2009
History
|
60 | |
| S04E06 | 10 Ways to Destroy the Earth |
September 22, 2009
History
|
60 | |
| S04E07 | The Search for Cosmic Clusters |
September 29, 2009
History
|
60 | |
| S04E08 | Space Wars |
October 6, 2009
History
|
60 | |
| S04E09 | Liquid Universe |
October 20, 2009
History
|
60 | |
| S04E10 | Pulsars & Quasars |
October 27, 2009
History
|
60 | |
| S04E11 | Science Fiction. Science Fact. |
November 3, 2009
History
|
60 | |
| S04E12 |
Extreme Energy
season finale
|
November 10, 2009
History
|
60 |
No artwork of this type.
No artwork of this type.
