To Mars by A-Bomb: The Secret History of Project Orion

Jaromir Astl

as Self

Jeremy Bernstein

as Self

Arthur C. Clarke

as Self

Ed Creutz

as Self

Freeman Dyson

as Self

George Dyson

as Self

Edward B. Giller

as Self

Jonathan Kydd

as Narrator

Thomas Macken

as Self

Harris Mayer

as Self

Donald I. Prickett

as Self

Johndale Solem

as Self

Theodore B. Taylor

as Self

David Weiss

as Self