A spacecraft is leaving Earth, passing the planets of our solar system as it heads for the edge of the galaxy. With lively rhymes and a parade of stars, planets, comets, moons, and other celestial bodies—shown in Matt Rockefeller's elegant, awe-inspiring paintings—this book is an interactive journey of imagination and science. A three-dimensional plastic rocket is attached, which readers 4 to 7 can push on an internal track from front to back, up and over the pages, off toward far-off galaxies.