Science fiction fandom other groups including LGBT communities, libertarians, neo-pagans, and space activist groups like the L5 Society, among many others. Some groups exist almost entirely within fandom but are distinct and cohesive subcultures in their own rights, such as filkers, costumers, and convention runners (sometimes called "SMOFs"). Fandom encompasses subsets of fans that are principally interested in a single writer or subgenre, such as Tolkien fandom, and ("Trekkies"). Even short-lived television series may have dedicated followings, such as the fans of Joss Whedon's "Firefly" television series and movie "Serenity", known as Browncoats. Participation in science fiction fandom often overlaps with other similar
That Only a Mother one of the best science fiction short stories before the creation of the Nebula Awards. As such, it was published in "The Science Fiction Hall of Fame Volume One, 1929-1964". Jonathan Strahan has emphasized how uncommon it was at the time for science fiction to provide a woman's perspective, but nonetheless calls the story dated, saying that the passage of decades has changed it from "a chilling and timely piece of science fiction" to "an important but not particularly moving historical footnote." That Only a Mother "That Only a Mother" is a science fiction short story by American writer Judith