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This group of brilliant kids comes together from all four corners of the globe to fix problems, solve mysteries, and gather knowledge all over the planet - and beyond. Whenever their help is needed, a special sign will appear on a door. They step through to the Exploration Station and receive their mission...In The Secret Explorers and the Comet Collision, space expert Roshni leads a mission that's out of this world - literally! With rainforest expert Ollie, she is set the task of fixing the space probe orbiting Jupiter before a comet hits the planet. With the clock ticking, it's a race against time for the Secret Explorers as they dodge asteroids, complete daring spacewalks, and use all their skills to complete their mission.Packed with fun illustrations and facts about real-life missions to Jupiter, this thrilling adventure is perfect for young readers.