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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - Pathogens and Space Viruses | 27/11/2018 |
| S04E02 - E.T.s Helping Humanity | 22/01/2019 |
| S04E03 - Telepathy and Communication with E.T.s | 26/02/2019 |
| S04E04 - Modern Advances from E.T. Tech | 12/03/2019 |
| S04E05 - A Harrowing Journey Begins for a New Insider | 19/03/2019 |
| S04E06 - From Mars to Ceres and Beyond | 26/03/2019 |
| S04E07 - Fragmented Memories of 20 & Back | 01/04/2019 |
| S04E08 - Inner Earth: Descent | 23/04/2019 |
| S04E09 - Inner Earth: Missions | 30/04/2019 |
| S04E10 - Inner Earth: Microclimates | 21/05/2019 |
| S04E11 - Inner Earth: Diversity of Life | 28/05/2019 |