Distributia
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Erik DellumsNarrator (voice) (as Erik Todd Dellums)
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Michio KakuHimself - Theoretical Physicist, City University of New York (as Prof. Michio Kaku)
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Mike RoweNarrator (voice)
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Phil PlaitHimself - Astronomer, Discover Magazine (as Dr. Phil Plait)
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Lawrence KraussHimself - Theoretical Physicist, Arizona State University (as Prof. Lawrence Krauss)
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Michelle ThallerHerself - Astronomer, NASA Goddard Space Flight Center (as Dr. Michelle Thaller)
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Natalie BatalhaHerself - Astrophysicist, NASA Ames Research Center (as Dr. Natalie Batalha)
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Bryan GaenslerHimself - Astronomer, Center for All-Sky Astrophysics (as Prof. Bryan Gaensler)