El viaje más largo

Jordi Boixaderas

Self - Narrator (voice)

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José María Madiedo

Self - Astrophysic

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Ana Pires

Self - INESCTEC/ISEP Researcher

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Ignacio Horcada

Self - Spanish Navy Vice Admiral

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Bruno Gonçalves Neves

Self - Portuguese Navy Lieutenant

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Guadalupe Fernández

Self - Historian

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Pablo Emilio Pérez-Mallaína

Self - Historian

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Silvestre de Almeida Lacerda

Self - Historian

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José Marques

Self - V Centenary Commission President

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Xabier Alberdi

Self - Historian

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María Antonia Colomar Albajar

Self - Historian

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Tomás Mazón

Self - Researcher

Юрий Гагарин

Self - Cosmonaut (archive footage)

John F. Kennedy

Self - Politician (archive footage)