Distributia
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Sean CarrollHimself - Theoretical Physicist
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Moogega CooperHerself - Planetary Protection Engineer (as Moogega Stricker)
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James S. BullockHimself - Astrophysicist (as James Bullock)
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Mike RoweNarrator (voice)
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Phil PlaitHimself - Astronomer
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Max TegmarkHimself - Theoretical Physicist
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Michelle ThallerHerself - Astronomer
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Hakeem OluseyiHimself - Astrophysicist