Distributia
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Michio KakuHimself - Theoretical Physicist (as Prof. Michio Kaku)
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Richard LinternHimself - Narrator (voice)
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Mike RoweHimself - Narrator (voice)
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Phil PlaitHimself - Astronomer (as Dr. Phil Plait)
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Lawrence KraussHimself - Theoretical Physicist (as Prof. Lawrence Krauss)
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Michelle ThallerHerself - Astronomer (as Dr. Michelle Thaller)
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Eve StensonHerself - Astrophysicist
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Andrew KirkHimself - Plasma Physicist (as Dr. Andrew Kirk)