People use many kinds of computers. There are desktop computers, laptops, tablets, smartphones, and even some toys and cameras. Do you know what parts are similar in all computers? Or how these parts work together? Read this book to find out!

It's time for your mission to Earth! Jump in your super speedy rocket to explore Earth's size, mass, atmosphere, temperature, gravity, orbits, and moons. Basic solar system facts are brought to life with a focus on what questions scientists are still trying to solve. Each book ends with a section on how scientists discovered the facts that have been presented. Bright, colorful illustrations and straightforward text make this topic accessible for even...