Book excerpt: This reference tracks the development of speculative fiction influenced by the advancement of science and the idea of progress from the eighteenth century to the present day. The major authors and publications of the genre and significant subgenres are covered. Additionally there are entries on fields of science and technology which have been particularly prolific in provoking such speculation. The list of acronyms and abbreviations, the chronology covering the literature from the 1700s through the present, the introductory essay, and the dictionary entries provide science fiction novices and enthusiasts as well as serious writers and critics with a wonderful foundation for understanding the realm of science fiction literature. The extensive bibliography that includes books, journals, fanzines, and websites demonstrates that science fiction literature commands a massive following.