Zdeněk Štěpánek as Captain Vladimír Abajev

František Smolík as Anthony Hopkins, Mathematician

Dana Medřická as Nina Kirová, Sociologist

Irena Kačírková as Brigitta

Radovan Lukavský as Commander MacDonald

Otto Lackovič as Michal, Coordinator

Miroslav Macháček as Marcel Bernard

Jiří Vršťala as Erik Svenson, Pilot

Rudolf Deyl as Ervin Herold, Pilot

Jaroslav Mareš as Milek Wertbowsky

Martin Ťapák as Petr Kubeš, Biologist

Marcela Martínková as Štefa, Wertbowsky's wife

Jozef Adamovič as Zdeněk Lorenc, Coordinator

Jaroslav Rozsíval as The Ship's Doctor

Růžena Vyskočilová as Eva, Historian

Svatava Hubeňáková as Rena, MacDonald's wife

Jan Cmíral as Crewmember

Václav Irmanov as Coordinator

Eva Cedlová as Coordinator (uncredited)

Zdena Borovičková as Coordinator (uncredited)

Vladimír Navrátil as Coordinator (uncredited)

V. Maláková as Coordinator (uncredited)

J. Vicherková as Coordinator (uncredited)

Ladislav Mrkvička as Romeo in Movie (uncredited)

Hana Pražanová as Julie in Movie (uncredited)

Jiří Cejnek as Crewmember (uncredited)

Věra Křesadlová as Crewmember (uncredited)

Karel Duba as Crewmember (uncredited)

Gustav Vobornik as Crewmember (uncredited)

Olga Navrátilová as Crewmember (uncredited)

Olga Schoberová as Crewmember (uncredited)

Vladimír Štúr as Crewmember (uncredited)

Miroslav Abrahám as Crewmember (uncredited)

L. Prokůpek as Crewmember (uncredited)

R. Junášková as Crewmember (uncredited)

Renáta Pospíšilová as Crewmember (uncredited)

Marcela Baťková as Crewmember (uncredited)

V. Urbánek as Crewmember (uncredited)

V. Hrabák as Crewmember (uncredited)

Naděžda Blažíčková as Dancer (uncredited)

Alena Martinovská as Dancer (uncredited)

František Halmazňa as Dancer (uncredited)

Bohumil Klika as Dancer (uncredited)

Věra Burešová as Dancer (uncredited)

Jaguše Podešvová as Dancer (uncredited)

L. Stejskalová as Dancer (uncredited)

J. Januška as Navigator (uncredited)

J. Lacina as Robot (uncredited)

Zdeněk Jelínek as Pianist (uncredited)

Jan S. Kolár as Dead Man (uncredited)

Marie Popelková as Dead Woman (uncredited)

Josef Drbohlav as Dead Man (uncredited)

D. Kalibová as Dead Woman (uncredited)

J. Sluštická as Dead Woman (uncredited)

I. Sigrotová as Dead Woman (uncredited)

V. Zítko as Dead Man (uncredited)

B. Kocian as Dead Man (uncredited)

V. Smolík as Dead Man (uncredited)

Zdeněk Štěpánek as Narrator (voice) (uncredited)

Bohumil Bezouška as Petr Kubeš, Biologist (voice) (uncredited)

Ivo Palec as Zdeněk Lorenc, Coordinator (voice) (uncredited)

Bohumil Švarc as Computer (voice) (uncredited)