| Series cast summary: |
 | Dominic Frisby | - | Himself - Narrator 6 episodes, 2010 |
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| David J. Helfand | - | Himself - Quest University, Canada 6 episodes, 2010 |
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 | Phil Plait | - | Himself - Astronomer / - 6 episodes, 2010 |
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| Steve Jacobs | - | Himself - Chief scientist, Faraday Labs / - 5 episodes, 2010 |
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 | Michelle Thaller | - | Herself - Phd., astronomer, NASA Goddard Space Flight Center / - 5 episodes, 2010 |
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| Robert Hurt | - | Himself - Phd., Astronomer, Caltech / - 4 episodes, 2010 |
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| Geoff Marcy | - | Himself - University of California Berkeley 4 episodes, 2010 |
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| Mike Brown | - | Himself - Himself - Astronomer, Caltech / - 3 episodes, 2010 |
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