This book is the assembly of various texts that are freely available on the web, especially from Wikipedia. The next obvious question is: why buy this book? The answer: because it means you avoid having to carry out long and tedious internet searches. And, most important thing is free.
The topics are all linked to each other organically, and as a function of the subject and, in most cases, contain additional unpublished topics, not found on the web. Moreover, the inclusion of images completes the work so as to make it unique and unrepeatable.
Contents of the book: Characteristics of the genre, History, 19001920s, 1930s1950s, 1960s, 1970s1980s, 1990s2000s, 2010s, Themes, imagery, and visual elements, Imagery, Scientific elements, Alien lifeforms, Disaster films, Monster films, Mind and identity, Robots, Time travel, Genre as commentary on social issues, Future noir, Film versus literature, Influence of science fiction authors, Market share, Notes, References.