| | Science fiction - Wikipedia, the free encyclopedia |
 | | A science fiction story may be firmly rooted in real scientific possibilities as they are understood at the time of writing, as in Arthur C. Clarke's novel A Fall of Moondust, or highly imaginative, set in an extraterrestrial civilization or a parallel universe, as in Isaac Asimov's novel The Gods Themselves. |
 | | Science fiction has often been concerned with the great hopes people place in science but also with their fears concerning the negative side of technological development; the latter is expressed in the classic theme of the hubristic scientist who is destroyed by his own creation. |
 | | The broader category of speculative fiction includes science fiction, fantasy, alternate histories (which often have no particular scientific or futuristic component), and even literary stories in which the only fantastic element is the strangeness of their style. |
| en.wikipedia.org /wiki/Science_fiction (3215 words) |