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It weaves together a story of an attempt to produce a fake Ernest Hemingway manuscript with themes concerning time travel and parallel worlds. A shorter version of the book won both a Hugo Award and a Nebula Award for Best Novella in 1991 (for stories in 1990). [1] [2] A literary scholar decides to create a forged copy of Hemingway's missing ...
"Sidewise in Time" was among the first science fiction stories about parallel universes. [1] In 1903 H. G. Wells wrote "A Modern Utopia" in which people from our timeline were shown traveling to another, but Wells used this mainly as a literary device to present his speculations of a perfect society. Leinster's story, conversely, introduced the ...
Time travel can result in multiple universes if a time traveller can change the past. In one interpretation, alternative histories as a result of time travel are not parallel universes: while multiple parallel universes can co-exist simultaneously, only one history or alternative history can exist at any one moment, as alternative history usually involves, in essence, overriding the original ...
Seth Lloyd proposed an alternative approach to time travel with closed timelike curves (CTCs), based on "post-selection" and path integrals. [21] Path integrals are a powerful tool in quantum mechanics that involve summing probabilities over all possible ways a system could evolve, including paths that do not strictly follow a single timeline. [22]
A Tipler cylinder, also called a Tipler time machine, is a hypothetical object theorized to be a potential mode of time travel—although results have shown that a Tipler cylinder could only allow time travel if its length were infinite or with the existence of negative energy.
A time slip is a plot device in fantasy and science fiction in which a person, or group of people, seem to travel through time by unknown means. [12] [13] The idea of a time slip has been used in 19th century fantasy, an early example being Washington Irving's 1819 Rip Van Winkle, where the mechanism of time travel is an extraordinarily long sleep. [14]
Book features two agents from two warring factions (called 'Red' and 'Blue'), who traverse multiple different timelines in a form of time war. One timeline they encounter features a world where the Aztecs were not colonised, multiple worlds where Atlantis exists and falls, and one where the Earth was destroyed in a nuclear holocaust.
Time travel is the hypothetical activity of traveling into the past or future. Time travel is a concept in philosophy and fiction, particularly science fiction. In fiction, time travel is typically achieved through the use of a device known as a time machine. The idea of a time machine was popularized by H. G. Wells's 1895 novel The Time ...