Spaceship! is an Elmo's World board book in which Elmo imagines that he's an astronaut, blasting off into orbit. The book is part of a set of four Elmo's World books about space; each book features photos of Elmo set against photos of outer space provided by NASA. The other books in the set are Moon!, Stars! and Sun! A squeak-toy spaceship is built into the final page of the book. The reader is instructed to squeeze the toy whenever the text includes the word "spaceship".