National Geographic Kids Explorer Academy: The Nebula Secret

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Adventure, danger, and a thrilling global mission await 12-year-old Cruz Coronado—and your kid, too!—in National Geographic’s Explorer Academy: The Nebula Secret. Get your middle graders excited about reading with the Explorer Academy fact-based fiction series. Explorer Academy takes readers on action-packed adventures filled with intriguing codebreaking challenges, near-future technology, and a storyline that encourages observation, deductive reasoning, and problem-solving. The Nebula Secret is the first book in this seven-book series, which features diverse characters and cultures and teaches the value of friendship, family, loyalty, and trust. Moms will love how engaging and educational these books are, while kids have a blast joining the adventure.

Books one through five are now available!

Action-packed storylinesAugmented-reality expeditionsCode-breaking activitiesCool technologyGlobal explorationIn-the-field adventures with "real" explorersNational Geographic explorersReader and educator guidesRecommended for ages 8–12STEM integrationStudents from all over the worldThe science behind the fiction section

Where to Purchase

The Explorer Academy series, including The Nebula Secret (Book 1), is available to purchase at, and most local/independent bookstores.

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National Geographic Kids

About National Geographic Kids National Geographic Kids inspires young adventurers to explore the world through its award-winning books, magazines, website, television series, apps, games, and events. It is the leader in children’s nonfiction and the only major kids brand with a world-class scientific organization at its core. Check out: How Animals Can Inspire Kids to...

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