The best-selling Hello, World! board book series expands into picture books, for Hello, World! kids who are ready for the next step. Kids who enjoy looking up at space and dreaming of exploring the solar system will love this lively, fact-filled, illustrated tour of our galaxy, with engaging information on every page: * Fascinating details about each of the planets, including up-to-date information such as NASA's Perseverance rover and Ingenuity helicopter--accompanied by bright illustrations. * Statistics about each planet, with information about the planet's size, distance from the sun, length of days and years, and more. * A helpful chart that shows each planet's place in the solar system. * A question that asks the reader to think about the planets in relation to themselves, such as "Would you like to live on a planet with a long winter or a short winter?" and "What would you bring on your Mars rover?" Hello, World! readers who have moved up to picture books and any kids who love science and space will find many captivating hours of learning and inspiration in the launch of this exciting new series.