Distributia
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Albert EinsteinHimself - Theoretical Physicist (archive footage)
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Sean CarrollHimself - Theoretical Physicist
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James S. BullockHimself - Astrophysicist (as James Bullock)
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Mike RoweHimself - Narrator (voice)
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Edwin HubbleHimself - Astronomer (archive footage)
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Phil PlaitHimself - Astronomer
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Max TegmarkHimself - Theoretical Physicist
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Michelle ThallerHerself - Astronomer