User Summary Contains detailed descriptions of 100 planets, taken from famous works of science fiction. Includes charts for creating your own planetary systems. From the inside cover: The planets used in this Guide were inspired by some of the best writing in Science Fiction and Fantasy. On top of all entries in this Guide you will find the title, author, and publisher of the book that has inspired our description of that planet. Cover photograph of Mars courtesy of National Aeronautics and Space Administration.