A Ring of Endless Light

Young-adult fiction or young adult literature , also juvenile fiction, is fiction written, published, or marketed to adolescents and young adults.... The Young Adult Library Services of the American Library Association defines a young adult as someone between the ages of twelve and eighteen. Authors and readers of young adult novels often define the genre as literature as traditionally written for ages ranging from twelve years up to the age of eighteen, while some publishers may market young adult literature to as low as age ten or as high as age twenty-five. The terms young-adult novel, juvenile novel, young-adult book, etc. refer to the works in the YA category. YA literature shares the following fundamental elements of the fiction genre: character, plot, setting, theme, and style. However, theme and style are often subordinated to the more tangible elements of plot, setting, and character, which appeal more readily to younger readers. The vast majority of YA stories portray an adolescent, rather than an adult or child, as the protagonist.
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Fiction is the form of any narrative or informative work that deals, in part or in whole, with information or events that are not factual, but... rather, imaginary—that is, invented by the author. Although fiction describes a major branch of literary work, it may also refer to theatrical, cinematic or musical work. Fiction contrasts with non-fiction, which deals exclusively with factual events, descriptions, observations, etc. . Realistic fiction, although untrue, could actually happen. Some events, people, and places may even be real. This is termed "faction". It can be possible that in the future imagined events could physically happen. For example, Jules Verne's novel From The Earth To The Moon, which at that time was just a product of his rich imagination, was proven possible in 1969, when Neil Armstrong and Buzz Aldrin set foot on the Moon, and the team returned safely to Earth. Realistic fiction strives to make the reader feel as if they're reading something that is actually happening—something that though not real, is described in a believable way that helps the reader make a picture as if it were an actual event.
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Speculative fiction is an umbrella term encompassing the more fantastical fiction genres, specifically science fiction, fantasy, horror, supernatural... fiction, superhero fiction, utopian and dystopian fiction, apocalyptic and post-apocalyptic fiction, and alternate history in literature as well as related static, motion, and virtual arts. Speculative fiction as a category ranges from ancient works to both cutting edge, paradigm-changing and neotraditional works of the 21st century. Speculative fiction can be recognized in works whose authors' intentions or the social contexts of the versions of stories they portrayed is now known, since ancient Greek dramatists such as Euripides whose play Medea seems to have offended Athenian audiences when he fictionally speculated that shamaness Medea killed her own children instead of their being killed by other Corinthians after her departure, and whose Hippolytus, narratively introduced by Aphrodite, Goddess of Love in person, is suspected to have displeased his contemporary audiences because he portrayed Phaedra as too lusty.
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