"With a double cover, one half of the book is focused on the sky during the day, while if you turn the book over the other half focuses on the sky at night. Inside, readers can discover all about airborne wildlife, weird weather, aircraft, stars and constellations, and their mythology. What do you see when you look up at the sky? It may seem like a big, empty space, but it's busier than you think. From clouds and stars, to birds, planes and everything...