As described in Isaac Asimov's autobiography In Memory Yet Green, the Futurians spun off from the Greater New York Science Fiction Club ( headed by Sam Moskowitz, later an influential SF editor and historian ) over ideological differences, with the Futurians wishing to take a more overt political stance.

James Gunn described Gold's focus as being " not on the adventurer, the inventor, the engineer, or the scientist, but on the average citizen ," and according to SF historian David Kyle, Gold's work was to lead inevitably to the New Wave.

The claim was more than mere youthful bravado, according to SF historian Sam Moskowitz, who described the ' zine as the first devoted entirely to science fiction.

According to SF historian Sam Moskowitz, The Time Traveller was the first fanzine to be devoted exclusively to science fiction.

According to historian Adam Roberts, " the phrase Golden Age valorises a particular sort of writing: ' Hard SF ', linear narratives, heroes solving problems or countering threats in a space-opera or technological-adventure idiom.

* David N. Samuelson, " Hard SF ," pp. 194-200, The Routledge Companion to Science Fiction, 2009.

* The Flying Sorcerers ( 1971, with David Gerrold ), previously serialised as " The Misspelled Magishun ", includes portraits of other SF authors — e. g. the lead character name becomes translated into the local language as " As a color, shade of purple-gray " ( or Purple for short ), that is, " As-A-Mauve "

Some hard SF authors have distinguished themselves as working scientists, including Gregory Benford, Geoffrey A. Landis and David Brin, while mathematician authors include Rudy Rucker and Vernor Vinge.

Prominent military SF authors include John Ringo, David Drake, David Weber, and S. M. Stirling.

Her " incredible controversy " is characterized by David Hartwell in the opening sentence of a book chapter entitled " New Wave: The Great War of the 1960s ": " Conflict and argument are an enduring presence in the SF world, but literary politics has yielded to open warfare on the largest scale only once.

David Hartwell commenting on Algis J. Budrys writing in the review column of Galaxy magazine notes the " ringing scorn and righteous indignation " with which Budry's discussion vibrates in " one of the classic diatribes against Ballard and the new mode of SF then emergent ":

John Ringo and David Weber's " March Upcountry " series is a military SF story involving the march of a prince and his bodyguards across a hostile planet in order to return to their home world.

* SF Site review by David Soyka

In comparison, Geoff Ryman has claimed that the gay and SF genre markets are incompatible, with his books being marketed as one or the other, but never both, and David Seed said that SF purists have denied that SF that focuses on soft science fiction themes and marginalised groups ( including " gay SF ") is " real " science fiction.

* " Drode's Equations " ( 1981 ), a short story that appeared in New Dimensions 12 and is available in the science fiction anthology The Ascent of Wonder: The Evolution of Hard SF, edited by David G. Hartwell and Kathryn Cramer ( 1994 )

* " Third Person "-originally published in the anthology The Solaris Book of New Science Fiction, edited by George Mann ( Solaris, 2007 ); Reprinted in The Year's Best SF 13, edited by David Hartwell and Kathryn Cramer

* " Aristotle OS "-originally published in the anthology Fast Forward 1, edited by Lou Anders ( PYR, 2007 ); Reprinted in THE YEAR's BEST SF 13, edited by David Hartwell and Kathryn Cramer

* " The Waters of Meribah "-originally published in Interzone189 ; Reprinted in THE YEAR's BEST SF 9, edited by David Hartwell and Kathryn Cramer

* Fan ( Other ) David W. New, for editing Horizons SF

SF editor David G. Hartwell has said that Harshaw was inspired by the wealth and luxurious lifestyle of Erle Stanley Gardner, the best-selling author and creator of Perry Mason ; Gardner was also a lawyer.

* David Langford ( born 1953 ), British SF author and publisher of the fanzine Ansible

" David Soyka of the SF Site labeled the novel as a " disappointment " because of its clichéd plots and lack of coherency of the stories ' themes.

A similar poll in Britain conducted for SFX magazine in 1999 put Blake's 7 at 16th place, with the magazine commenting that " twenty years on, TV SF is still mapping the paths first explored by Terry Nation's baby ".

Red Dust, set on a far-future Mars colonized by the Chinese, is a planetary romance filled with all the latest SF ideas: nanotechnology, biotechnology, artificial intelligence, personality downloads, virtual reality.

Nobel Laureate Doris Lessing wrote a series of SF novels, Canopus in Argos, and nearly all of Kurt Vonnegut's works contain science fiction premises or themes.

SF writer Cory Doctorow calls science fiction " perhaps the most social of all literary genres ", and states, " Science fiction is driven by organized fandom, volunteers who put on hundreds of literary conventions in every corner of the globe, every weekend of the year.

There may be a notch filter at the precise SF frequency, either filtering the circuit at all times or only when the circuit is off-hook, to prevent the user from inadvertently disconnecting a call if the users voice has a sufficiently strong spectral content at the SF frequency, a falsing condition known as talk-off.

In addition, he is the author of the monthly " SF Convention Calendar " in Isaac Asimov's Science Fiction Magazine, and his flyer racks (" Filthy boards ") are seen at conventions all over the East Coast.

Cf-252 and all other spontaneous fission neutron sources are produced by irradiating uranium or another transuranic element in a nuclear reactor, where neutrons are absorbed in the starting material and its subsequent reaction products, transmuting the starting material into the SF isotope.

* The four Science Fiction RoundTables ( the SFRT ), the official online home of the Horror Writers Association and the Science Fiction and Fantasy Writers of America before the Internet became popular ( SFWA members, who were all published authors, received free access to the SF RoundTables )

In a 1977 review of the original ( 1976 ) Avalon Hill game, Martin Easterbrook stated that " All in all this is probably the best SF game currently on the market because it has the well worked out background of Heinlein's novel and because it is an extrapolation of current military technology, allowing Avalon Hill to use their experience in game design " and gave the game an overall 9 / 10 rating.

In the 2001 elections the party lost one seat and after Liberal Party, the Conservative People's Party and the Danish People's Party gained a majority SF lost almost all political influence in parliament.

: there are no very creditable explanations for his flood of anthologies in the mid-1970s ; that the publishers who bought them would never have done so if they'd had any idea that he was carpet-bombing SF publishing with anthology projects ; that many of his anthologies ( if not all the stories in them ) were well below par in terms of their quality ; and that the subsequent collapse of the anthology and story-collection market did long-term damage to science fiction as a whole.

These factors cost the SF significant losses in the 1964 general election where PR and the NCP failed to gain any seats at all and the LPM lost significant number of seats.

They are now available to all Danish Defence Commands and is closely linked with the Jager and Frogmen SF elements including getting some of the same exclusive gear like combat-vests and XL-military rub-sacks Special Support and Reconnaissance Company

* 2012: HDTV transmission ( not all programmes yet ) of SF 1, SF zwei and SF info ; HD suisse was closed in return

The badge is awarded to all Security Forces ( SF ) members upon graduation from the Security Forces Academy ( Tech school ).

Limited availability of the books in bookstores that already sold science fiction, resistance among science-fiction readers to serialized monthly publication, the lower visibility of the line's deliberately muted cover color palette, and the lack of interest in genre SF among regular patrons of comic-book stores, were all cited by industry observers as factors in the imprint's demise.

SK Neptun, Stockholmspolisens IF, SoIK Hellas, Stockholms KK and Spårvägens SF all use Eriksdalsbadet for training.

Currently in the pipeline are Lowell Was Right-a SF game set in a universe where western science as of 1900 was basically correct, and all newer changes were wrong, and Volant-Kingdoms of Air and Stone-a fantasy game set in a world of floating mountains, where giant birds are ridden though the air, and monsters prowl the surface below.

In 1999, when science fiction magazine SFX asked an expert panel from the SF field, including Terry Pratchett and Stephen Baxter, to compile a list of the top 50 SF shows of all time, Star Cops came thirteenth on the list, with SFX describing it as " the SF TV show SF writers love.