Since the 1950s, this type of fiction has to a large extent merged with science fictional tropes involving cross-time travel between alternate histories or psychic awareness of the existence of " our " universe by the people in another ; or ordinary voyaging uptime ( into the past ) or downtime ( into the future ) that results in history splitting into two or more time-lines.

Science fiction set in what was the future but is now the past, like Arthur C. Clarke's 2001: A Space Odyssey or Nineteen Eighty-Four, are not alternate history because the author has not made the conscious choice to change the past.

" It has also been implied, especially in the ' alternate future ' story Kingdom Come, that the Clark Kent persona is symbolic of the values taught to him by his wholesome Midwestern parents, the values he holds most dear: his instinctive knowledge of right and wrong that allows him to adopt his Superman persona, without being consumed by the moral implications of his actions ; Superman is the means through which he can bring this example to the world.

Some of these languages, e. g., in worlds of fantasy fiction, alternative universes, Earth's future, or alternate history, are presented as distorted versions or dialects of modern English or other natural language, while others are independently designed conlangs.

The New York Times reviewed the play saying " Mr. Davalos has molded a daft campus comedy out of this unlikely convergence ," and nytheatres review said the playwright " has imagined a fascinating alternate reality, and quite possibly, given the fictional Hamlet a back story that will inform the role for the future.

While continuing on X-Factor, Cyclops proposes to Jean and she meets her alternate future daughter Rachel Summers ( who goes by the codename " Phoenix " as well and is also able to tap into the Phoenix Force ), but she rejects them both out of the feeling that they indicate that her life is predetermined.

In the alternate future called " Marvel 2099 ", various power struggles over the fate of Latveria end with most of the country destroyed by nanites.

In the alternate future timeline of Titans Tomorrow, in which Conner still exists, Luthor acts as a caring, fatherly figure to him.

Several post-Mariner works are homages to the older phase of Mars fiction, circumventing the scientific picture of a dry and lifeless Mars with an unbreathable atmosphere through such science fiction generic staples as positing its future terraforming, or creating alternate history versions of Mars, where Burroughs ' Barsoom, Bradbury's Martian Chronicles or The War of the Worlds are literal truth.

References to the Israeli – Palestinian conflict crop up quite frequently in Anderson's fiction, through various analogues and the conflict's past, future, and alternate permutations.

Anderson set much of his work in the past, often with the addition of magic, or in alternate or future worlds that resemble past eras.

In an alternate future episode, " Endgame ", the Doctor adopts the name Joe, and marries a human female, named Lana ( played by Amy Lindsay ).

In the series finale, an alternate future timeline is shown where he has chosen the name " Joe.

In an alternate future, Alexander becomes a diplomat instead of a warrior.

In an alternate future, Worf had been reluctant to become involved with Troi and her subsequent death led to a rift between Riker and himself as a result.

With the intervention of a future / alternate version of herself, Janeway leads her crew in using one of the Borg's transwarp conduits to return her ship to Federation space after having traveled through the Delta Quadrant for seven years.

In an alternate future, seen in the series finale " Endgame ", Seven and Chakotay marry, though she dies before Voyager reaches home and Chakotay dies in 2394.

It also renders the events of Kes ' future, including her marriage to Tom Paris as well as her daughter Linnis, into an alternate timeline that never comes to pass.

In the series finale " All Good Things ...", it is revealed that in an alternate future, Dr. Crusher and Captain Picard had been married and then divorced — still evidently having feelings for each other after so many years.

In the alternate 2390 future in Star Trek: Voyagers " Timeless ", La Forge is a captain and the commanding officer of the USS Challenger, doing his best to stop Harry Kim and Chakotay from altering the time line.

The USS Enterprise ( NCC-1701-C ) responded to the outpost's distress call and engaged the Romulan ships, but was defeated and taken with its survivors ( among them a version of Lieutenant Tasha Yar from the future of an alternate timeline ) back to Romulan territory.

In " All Good Things ...", the final episode of Star Trek: The Next Generation, the Enterprise-D was shown in an alternate future where it had not crashed during the events of Star Trek: Generations, and instead had been made Admiral William T. Riker's personal flagship.

In the " Days of Future Past " timeline, which takes place in an alternate future, the " Omega Sentinels " have advanced technologically and become the de facto rulers of the United States.

In the alternate future depicted in Marvel 2099, an alien attack floods much of the earth rendering the Savage Land the only inhabitable space.

The game was first published in 1984 during the Cold War and was intended to be an accurate depiction of a possible future, but events in the world have rendered the premise of the game an alternate history.

In the Voyager episode, " Non Sequitur ," Tom Paris ' alternate self ( in the parallel dimension ) relates to Harry Kim a story about how, during a stop at Deep Space Nine, he got in a bar fight with a Ferengi and was thrown in the brig by " a very unpleasant shapeshifter ", obviously referring to Odo.

In an alternate timeline where Voyager made it home by different means, Miral was shown as an adult serving in Starfleet, with the rank of ensign.

Voyager was not attacked in the restored timeline ; so the alternate reality when Kes got the warning wouldn't have taken place.

The Starfleet Engineering Corps ( also called the Starfleet Corps of Engineers ) is mentioned in several episodes in conjunction with projects such as hollowing out the underground laboratory complex inside the Regula I asteroid in Star Trek II: The Wrath of Khan, the design of the Yellowstone-class Runabout in the alternate timeline in the Star Trek: Voyager episode " Non Sequitur ", and devising a defense against the Breen energy-dampening weapon in the Star Trek: Deep Space Nine episode " When It Rains ..." As a result of these successes, Starfleet engineers have gained a reputation as the undisputed masters of technological adaptation and modification.

The USS Defiant, introduced in the third season of Deep Space Nine, was said to use ablative armor in addition to shields ; this technology also appeared in the alternate time line of the early 25th century shown in the Star Trek: Voyager series finale " Endgame ", where it withstood repeated assaults by Borg weaponry and tractor beams.

After a seven-year journey, the ship returns to the Alpha Quadrant via a Borg transwarp conduit with the aid of the time-traveling Admiral Kathryn Janeway ( former Captain of Voyager ) from an alternate future.

Gameplay included cards named after each of the previous releases, more Mirror Universe content, and alternate versions of other personnel who had not been featured in the Mirror Universe, including a battleship version of The Next Generation crew from Yesterday's Enterprise and a historically inaccurate Voyager crew from Living Witness.

This revelation takes place in an alternate future, one in which the Voyager crew does not ultimately end up.

" In the alternate future, Admiral Janeway reminds Captain Kim of the time when he was still an Ensign on Voyager that he wanted to enter the Borg-infested nebula because of the promise of a way home it held, and he reminds her that she stopped him.

However, in the episode " Timeless ", the technology proved to be dangerously unstable, resulting in the loss of all hands ( save for Harry Kim and Chakotay ) of the Voyager in an alternate timeline.

The series is set on an alternate 18th-century Earth.

* The Ceres Ocean, in the alternate Earth of the Ace Combat video game series

After several years of directing primarily lower-key live-action films, Hideaki Anno formed his own production studio and revisited his still-popular Evangelion franchise with the Rebuild of Evangelion tetralogy, a new series of films providing an alternate retelling of the original story.

Mobile Suit Gundam Wing, known in Japan as, is an anime series in the mecha genre, and is one of the alternate universe Gundam series, taking place in the After Colony timeline.

His Age of Apocalypse appearance ( referred to as Spikey ), classic costume ( his standard look ), original costume ( his first comic appearances, with his face completely frosted over ), and Bobby Drake ( the look he adopts in the New X-Men series and his subsequent solo series: he appears in his human form, wearing a leather trenchcoat, with only his hands appearing frozen ) are alternate costumes for Iceman.

Ribbentrop is also a key figure in the historical novel Famous Last Words by Timothy Findley ( Penguin Books 1982, ISBN 0-14-006268-8 ) and Harry Turtledove's alternate history series Worldwar where his Soviet counterpart Molotov frequently expresses contempt for his lack of intelligence.

In the 1632 series of alternate history novels, the Union of Kalmar is reunited by Gustav Adolf, King of Sweden, in 1634.

The whimsical Svetz series consists of a collection of short stories, The Flight of the Horse, and a novel, Rainbow Mars, which involve a nominal time machine sent back to retrieve long-extinct animals, but which travels, in fact, into alternate realities and brings back mythical creatures such as a Roc and a Unicorn.

Superman: Birthright, a limited series written by Mark Waid in 2004, offers an alternate look at Luthor's history, including his youth in Smallville, and his first encounter with Superman.

* Draka series ( 1989 -), a dystopian alternate history by S. M. Stirling.

Since the release of Chrono Cross, Radical Dreamers is considered an alternate continuity of the Chrono series.

In the alternate timeline of TNG series finale " All Good Things ...", La Forge has, by 2395, married Leah Brahms and had three children ( Alandra, Brett, and Sydney ) with her.

With the retelling of Arrivederci Yamato as the open-ended Yamato II television series ( ending in late 2201 ), Arrivederci Yamato was redesignated as a discardable, alternate timeline.

Theodore Roosevelt is an important character in the Southern Victory Series ( also known as Timeline-191 ), an alternate history series by Harry Turtledove.

Three alternate retellings of The Vision of Escaflowne have been released in manga form, with first two manga series developed at the same time as the anime.

He was also adapted into a character in Orson Scott Card's alternate history series The Tales of Alvin Maker ; he is presented as a crude but deeply witty and insightful man.

A late third series, composed of The Incorporated Knight and The Pixilated Peeress, is set in the medieval era of another alternate world sharing the geography of our own, but in which a Neapolitan empire filled the role of Rome and no universal religion like Christianity ever arose, leaving its nations split among competing pagan sects.

The story from the original 1979 series has been considerably extended with sequels, prequels, side stories and alternate timelines.

The majority of Gundam, including the earliest series, occur in the Universal Century ( UC ) calendar, with later series set in alternate calendars or timelines mostly unrelated to the UC system ( at least three of these calendar systems were actually initially numbered after the year that the series premiered, with 1979's Mobile Suit Gundam taking place in UC 0079, 1995's Mobile Suit Gundam Wing in After Colony 195, and 2007's Mobile Suit Gundam 00 taking place in 2307 ).