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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - Death Stars | 18/08/2009 |
| S04E02 - The Day the Moon Was Gone | 25/08/2009 |
| S04E03 - It Fell from Space | 01/09/2009 |
| S04E04 - Biggest Blasts | 08/09/2009 |
| S04E05 - The Hunt for Ringed Planets | 15/09/2009 |
| S04E06 - 10 Ways to Destroy the Earth | 22/09/2009 |
| S04E07 - The Search for Cosmic Clusters | 29/09/2009 |
| S04E08 - Space Wars | 06/10/2009 |
| S04E09 - Liquid Universe | 20/10/2009 |
| S04E10 - Pulsars & Quasars | 27/10/2009 |
| S04E11 - Science Fiction. Science Fact. | 03/11/2009 |
| S04E12 - Extreme Energy | 10/11/2009 |