Hartwell and Cramer define space opera as 'colorful, dramatic, large-scale science fiction adventure, competently and sometimes beautifully written, usually focused on a sympathetic, heroic central character and plot action, and usually set in the relatively distant future, and in space or on other worlds, characteristically optimistic in tone. It was only in the early 1990s that the term space opera began to be recognized as a legitimate genre of science fiction. By the early 1980s, space operas-adventure stories set in space-were again redefined, and the label was attached to major popular culture works such as Star Wars. In particular, they disputed the claims that space operas were obsolete, and Del Rey Books labeled reissues of earlier work of Leigh Brackett as space opera.

Yet soon after his redefinition, it began to be challenged, for example, by the editorial practice and marketing of Judy-Lynn del Rey and in the reviews of her husband and colleague Lester del Rey. īeginning in the 1960s, and widely accepted by the 1970s, the space opera was redefined, following Brian Aldiss' definition in Space Opera (1974) as (in the paraphrase Hartwell and Cramer) 'the good old stuff'. In other words, many works that are today classified as 'space operas' would not have been called by that name originally. This usage of 'space opera' as a term for poor SF, remained in force until about the 1970s. In fact, some fans and critics have noted that the plots of space operas have sometimes been taken from horse operas and simply translated into an outer space environment. Even earlier, the term horse opera had come into use as a term for western films. Tucker defined space opera as the SF equivalent: a 'hacky, grinding, stinking, outworn, spaceship yarn'. At the time, serial radio dramas in the US had become popularly known as soap operas because many were sponsored by soap manufacturers. The phrase 'space opera' itself was coined in 1941 by fanwriter (and later author) Wilson Tucker, in a fanzine article, as a pejorative term. They argue that 'what used to be science fantasy is now space opera, and what used to be space opera is entirely forgotten.' They further note that space opera has had several key and different definitions throughout its history definitions that were significantly affected by literary politics. Hartwell and Kathryn Cramer note in their 2006 anthology of space operas, 'there is no general agreement as to what is, which writers are the best examples, or even which works are space opera'.

Space opera definition