Visiting air and space museums is one of the coolest ways to learn about planes, jets, and space technology. The Museum Kids loved exploring inside. But as they left, the elevator didn't take them to the lobby—it took them into the past! An astronaut guides the Museum Kids—and readers—through the history of air and space science, from da Vinci to the Wright brothers and from Neil Armstrong's moon boot to the Mars rovers. A concluding quiz tests what the Museum Kids and readers have learned on their exciting adventure.