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.

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 an alternate universe, Worf leads the Klingon-Cardassian Alliance as regent.

Major characters who became married to each other include Keiko and Miles O ' Brien, Worf and Jadzia Dax, Leeta and Rom, Tom Paris and B ' Elanna Torres, William Riker and Deanna Troi, and Jean-Luc Picard and Beverly Crusher ( in an alternate future ).

Secret history, works that document things that are not known to have happened historically but would not have changed history had they happened, is also not to be confused with alternate history.

* Moriarty by Modem, a short story by Jack Nimersheim, describes an alternate history where Babbage's Analytical Engine was indeed completed and had been deemed highly classified by the British government.

It appears that the particular term, with its more definite sense, was coined by Heisenberg in the 1950s, while criticizing alternate " interpretations " ( e. g., David Bohm's ) that had been developed.

In 1945, the 7th Congress had 547 full and 208 alternate delegates representing 1. 21 million members, a ratio of one representative per 1, 600 members as compared to 1: 725 in 1927.

Examples of alternate disaster recovery sites being compromised by the same disaster that affected the primary site include having had a primary site in World Trade Center I and the recovery site in 7 World Trade Center, both of which were destroyed in the 9 / 11 attack, and having one's primary site and recovery site in the same coastal region, which leads to both being vulnerable to hurricane damage ( for example, primary site in New Orleans and recovery site in Jefferson Parish, both of which were hit by Hurricane Katrina in 2005 ).

With the development of the internet, by the late 1990s and early 2000, much of that regulation had been replaced where newer industry technologies developed, offering viewers alternate choices for local events and programming leading to what is today, that being Digital Cable, Internet, and Phone being offered to consumers, bundled, by 2010.

Since the league began allowing teams to use an alternate jersey, the Cowboys ' alternates have been primarily blue versions of past jerseys and the Cowboys have generally had success when wearing these blue alternates.

By that time, the college leadership had begun a search for alternate locations that were closer to urban areas.

Although the white jerseys of the Minnesota Vikings at the time also had a similar striping pattern and continued as such ( as well as the throwbacks the New England Patriots wore in the Thanksgiving game against the Detroit Lions in 2002, though the Patriots later wore the same throwbacks in 2009 with truncated stripes and in 2010 became their official alternate uniform ), the Colts and most college teams with this striping pattern did not make this adjustment.

The loss of vultures has had a social impact on the Indian Zoroastrian Parsi community, which traditionally uses vultures to dispose of human corpses in a Tower of Silence, but are now compelled to seek alternate methods of disposal.

( The Library of Alexandria in fact had an indirect cause in the creation of writing parchment — due to the library's critical need for papyrus, little was exported and thus an alternate source of copy material became essential.

For example, it is likely that even if the Library of Alexandria had hundreds of thousands of scrolls ( and thus perhaps tens of thousands of individual works ), some of these would have been duplicate copies or alternate versions of the same texts.

From 1969 through 1973, the Vikings had an alternate purple jersey without stripes for warm-weather games.

* In one of Robert A. Heinlein's last novels, The Number of the Beast ( 1980 ), the heroes flee Earth in a car capable of flight in six dimensions and find several alternate versions of Mars, one which had been colonised by the British and another which is an improbable combination of Burroughs ' fabulous Barsoom with the home planet of the vicious Martians whose invasion of Earth was described by Wells.

From 2003 through 2008, the New England Patriots had a " light " jersey ( their alternate, a bright metallic silver ) that isn't white in which the other team would wear their colored, or " dark " jerseys against them since the third jersey rule was implemented in the NFL in 2002.

Additionally, the Giants had until the ' 09 –' 10 season a third jersey which recalled the Giants ' solid red home jerseys from the early 50's: a solid red alternate with white block numbers.

It was a principle of stanza-formation that masculine and feminine rhymes had to alternate in the stanza.

Most of the alternate guards had to be cut due to technical limitations at the time.

This had the side effect of making memory requirements much higher than normal for the time, so in order to conserve performance, the alternate versions of the enemies were removed.

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.

In the hologram alternate history depicted in " Future Imperfect ," La Forge had cloned eye implants and had no need of his visor.