This book, first published in 1980, is a guide to the major forces in the subculture of science fiction. It analyses the history of the field and the related developments, for instance the Bomb, that have shaped the literature. It examines the complex of activity and background tradition, the body of accepted beliefs and conventions, and the ethics and values of the world of science fiction.

This book, first published in 1980, is a guide to the major forces in the subculture of science fiction. It analyses the history of the field and the related developments, for instance the Bomb, that have shaped the literature. It examines the complex of activity and background tradition, the body of accepted beliefs and conventions, and the ethics and values of the world of science fiction.

Bruce Gordon was an ex-fighter, ex-gambler, ex-cop, ex-reporter, and now he was an ex-patriot of Earth. Security shipped him to Mars with a knife, 100 credits, and a yellow card that meant no return. A science fiction novel that would appeal to Mickey Spillane fans, Police Your Planet features lots of violence, beatings, and blood. But this isn't just a crime novel put into space; this is a hard SF novel, and the terraforming of Mars is central to the story.