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lang: eng lang: ita lang: Based on an original idea by Elisabetta Dami Summary: Geronimo Stiltonix's spaceship is in danger of exploding! The only solution is to replace the engine's batteries by tracking down a rare element When a group of mysterious aliens claim they can help, Geronimo is relieved. But are the aliens as friendly as they seem? (Back cover) Translated from the Italian Geronimo Stilton Spacemice 1 Spacemice 1