Into the great unknown! Receiving a telegram from his good friend Professor Calculus, Tintin travels to Syldavia where he finds that the Professor has been working on a secret project: a moon rocket! But others have heard as well; spies from another nation seek to sabotage the rocket, steal the plans, and take Calculus’ nuclear engine for themselves! Paper back book. 8.5 inches by 11.5 inches. 62 pages
