Welcome to World Book @ NASA for Students! We are proud to present a group of articles from World Book encyclopedia on the NASA Web site. NASA and World Book are working together to provide World Book content with information about space and Earth science, aeronautics and space exploration subjects.
The articles on this page bring out-of-this-world concepts down to Earth. They are perfect for students doing research or for anyone who would just like to learn more about the world -- and universe -- around us.