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John F. Kennedy as Self - Politician (archive footage) Jordi Boixaderas as Self - Narrator (voice) Yuri Gagarin as Self - Cosmonaut (archive footage)

Sara Gómez Executive Producer, Production Director Ana Álvarez-Ossorio Editor Juan Cantón Sound Recordist Fátima de los Santos First Assistant Director Alejandro Toro Camera Operator Pedro Duque Thanks Olmo Figueredo Producer Carlos Rosado Sibón Associate Producer Manuel H. Martín Director, Screenplay