This picture book leads children through a world of words and images. A space visitor travels round the wonders of planet Earth and finally arrives in a playground where he encounters Earth's children. Along the way, the space visitor picks out objects from every area and learns their names. From submarine to satellite dish, around 300 objects are listed along the top of every page. Subjects covered are: space; ocean; mountains; desert; animals; market; food; buildings; farm; transport; and dinosaurs. A special thumb index helps children to discover the different themes.