| Episode credited cast: |
 | Mike Brown | - | Himself - Astronomer, Caltech |
| Fritz Coleman | - | Himself - Weather Forecaster, KNBC |
| John Cornett | - | Himself - National Solar Observatory |
| Dominic Frisby | - | Himself - Narrator |
| David J. Helfand | - | Himself - Quest University, Canada |
| Steve Jacobs | - | Himself - Chief Scientist, Faraday Labs |
| Alexei Pevtsov | - | Himself - National Solar Observatory |
 | Phil Plait | - | Himself - Phd., Astronomer |
| Peter Rhines | - | Himself - Phd., Oceanographer, University of Washington |
| Ken Tegnell | - | Himself - Forecaster, NOAA |
 | Michelle Thaller | - | Herself - Phd., Astronomer |
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