2015-2016 Florida Sunshine State Young Readers Award Winner!With engaging illustrations on every spread, a page-turning plot, a do-it-yourself experiment on building your own rocket, and fun science facts throughout, this is the perfect chapter book for young readers! And it's all from the amazing brain of MIT graduate Nate Ball, host of PBS's Emmy Award-winning Design Squad series.When a four-inch-tall alien crash-lands through Zack McGee's bedroom window, Zack is sure he's about to become the first victim in a new War of the Worlds. But when the alien turns out to have weapons that are more ticklish than terrifying, Zack realizes that rather than protect the world from the alien, it's up to him to protect the alien in his pocket from the world.The adventure begins in this thrilling new chapter book series, complete with a do-it-yourself science experiment!