Come explore the Observatory in this new story based on the magical world of Tove Jansson and the Moominvalley. Open the transparent pages and spot your favorite characters in this beautiful shape book. Moomin and Snorkmaiden follow a trail of green smoke as they search for a Mars in the Observatory... but what will happen when they find it? Follow Moomin and Snorkmaiden as they uncover mysteries while following the smoke, beyond Stinky, Little My, and some shrunken Moomins and curious creatures. During the search, open the bubbles to explore rooms, peek into cupboards, and look behind doors. There are all kinds of wonderful things to find! The perfect introduction for young children to the world of Tove Jansson and Moominvalley, enjoy more fun Moomin-shaped adventures with the books 'At the Moomin House' and 'At the Lighthouse'.