The Encyclopedia of Science Fiction or SFE aims to provide a comprehensive, scholarly, and critical guides to science fiction. Many of its entries come from encyclopedias that were previously published in print.
Issues of Galaxy Magazine from 1950-1976 are now available to read for free online. It contained works by many science fiction greats and had an impact on speculative fiction.
Below are some of the websites related to Science Fiction. As always, be careful with the information you find on the web. Be sure to evaluate your sources!
Pulp magazine Amazing Stories began publication in 1926 and greatly impacted science fiction and influenced many sci-fi greats, including Arthur C. Clarke. Early issues of Amazing Stories have also been archived online.