Ηθοποιοί επεισοδίου
Mike RoweNarrator
Phil PlaitSelf - Astronomer
Michelle ThallerSelf - Astronomer
Hakeem Muata OluseyiSelf - Astrophysicist
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Nina LanzaSelf - Planetary Scientist
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Moogega CooperSelf - Planetary Protection Engineer
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Jani RadebaughSelf - Planetary Scientist
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Chris MckaySelf - Astrobiologist
Dan DurdaSelf - Planetary Scientist
James S. BullockSelf - Astrophysicist
Carly HowettSelf - Planetary Scientist
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Paul M SutterSelf - Astrophysicist
Kevin J. WalshSelf - Astronomer
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Amber StraughnSelf - Astrophysicist