Calificación
Reparto

Jaromir Astl
Self

Jeremy Bernstein
Self

Arthur C. Clarke
Self

Ed Creutz
Self

Freeman Dyson
Self

George Dyson
Self

Edward B. Giller
Self

Jonathan Kydd
Narrator

Thomas Macken
Self

Harris Mayer
Self

Donald I. Prickett
Self

Johndale Solem
Self

Theodore B. Taylor
Self

David Weiss
Self