Distributia
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Richard LinternNarrator (voice)
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Gavin HeffernanEl însuși
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Mike CappsHimself - Technology Theorist
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Jerry PournelleEl însuși
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Nick PopeEl însuși
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Hakeem OluseyiHimself, Astrophysicist
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William J. BirnesHimself - Author, 'The Day After Roswell'
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Erik DellumsNarrator (as Erik Todd Dellums)
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Richard F. HainesHimself - NASA Investigator (archive footage)
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Leroy ChiaoHimself - NASA Shuttle Astronaut
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Ken BowersoxHimself - NASA Shuttle Astronaut
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Matt GengeHimself - Planetary Scientist
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Marc D'AntonioHimself - Chief Image Analyst, MUFO
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Kevin H. BainesHimself - Planetary Scientist (as Kevin Baines)
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Laurence GarvieHimself - Meteorite Expert
