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|The [[Great Intelligence]] negated the Doctor's victories||[[Clara Oswald|Clara]]||[[TV]]: ''[[The Name of the Doctor]]'' | |The [[Great Intelligence]] negated the Doctor's victories||[[Clara Oswald|Clara]]||[[TV]]: ''[[The Name of the Doctor]]'' | ||
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|The [[War Doctor]] destroys [[Gallifrey]] and the [[Daleks]] with [[The Moment]]||[[First Doctor]], [[Second Doctor]], [[Third Doctor]], [[Fourth Doctor]], [[Fifth Doctor]], [[Sixth Doctor]], [[Seventh Doctor]], [[Eighth Doctor]], [[War Doctor]], [[Ninth Doctor]], [[Tenth Doctor]] and [[ | |The [[War Doctor]] destroys [[Gallifrey]] and the [[Daleks]] with [[The Moment]]||[[First Doctor]], [[Second Doctor]], [[Third Doctor]], [[Fourth Doctor]], [[Fifth Doctor]], [[Sixth Doctor]], [[Seventh Doctor]], [[Eighth Doctor]], [[War Doctor]], [[Ninth Doctor]], [[Tenth Doctor]], [[Eleventh Doctor]], and [[Twelfth Doctor]]||[[TV]]: ''[[The Day of the Doctor]]'' | ||
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== Timelines encountered by others == | == Timelines encountered by others == | ||
{| {{prettytable}} | {| {{prettytable}} | ||
|'''Timeline''' || '''Negated By''' || '''Featured in'''''' | |'''Timeline''' || '''Negated By''' || '''<nowiki>Featured in'</nowiki>''''''' | ||
|- | |- | ||
|The [[Seventh Doctor]] defeated the [[Vardan]] invasion of [[Earth]] by leaving clues for his past self||[[The Monk]]||[[PROSE]]: ''[[No Future]]'' | |The [[Seventh Doctor]] defeated the [[Vardan]] invasion of [[Earth]] by leaving clues for his past self||[[The Monk]]||[[PROSE]]: ''[[No Future]]'' | ||
Revision as of 11:54, 24 November 2013
An alternate timeline was a reality that diverged from the "true" timeline due to the actions of time travellers or other temporal phenomena. They were different from parallel universes in that they did not separate cleanly at the point of creation resulting in the new timeline destroying the old one. (PROSE: Imperial Moon) The phenomenon was also described as an "interstitial spillage of time." (AUDIO: Project: Lazarus)
Physics
Alternate timelines could be visited accidentally by jumping a time track (TV: The Space Museum, AUDIO: The Mutant Phase) or contacting other anomalies (AUDIO: Colditz) in the Time Vortex. Deliberate travel to these timelines was possible if the traveller possessed something, such as the sigil ring, that allowed them to change time streams. (PROSE: Goth Opera)
They may have diverged from points in history when there was temporal fluctuation. The power required to adjust the timeflow and overcome temporal inertia on such a scale couldn't fit on a single planet, but beings with enough power were capable of doing so, such as Sutekh, the Guardians of Time, Rassilon, and the Chronovores. Even the Doctor or the Master could have the know-how or inclination to create them. Because the universe only had a finite amount of mass and energy to exist as one universe, the creation of an alternate timeline adversely affected the real timeline, causing chaos throughout the universe; releasing enough energy could destroy the timeline and set history back on its correct course. (PROSE: Blood Heat)
Though a timeline could be negated, memories of it could still be retained. (TV: The Big Bang, The Impossible Astronaut) Sometimes these memories were subconscious and only surfaced in dreams. (AUDIO: The Time of the Daleks, Jubilee)
Metaphysics
From a metaphysical viewpoint, alternate timelines were always being extinguished as fewer and fewer choices became open. This was particularly affected by time travellers who changed the future whenever they arrived in a new time. This was the cosmic pain of the universe and in this manner Gabriel and Tanith were personifications of the timelines that never existed. (PROSE: Falls the Shadow)
Terminology
The phrase "alternate/alternative timeline/universe" was sometimes used interchangably with "parallel universe"; however, alternate timelines usually changed after a single moment in time, whereas parallel universes usually had more than one difference from the "normal" universe.
Timelines encountered by the Doctor
Timelines encountered by others
| Timeline | Negated By | Featured in''' |
| The Seventh Doctor defeated the Vardan invasion of Earth by leaving clues for his past self | The Monk | PROSE: No Future |
| Insects of the Mind evolved as the dominant life on Earth | The existence of time travel | PROSE: Falls the Shadow |
| Britain was a conformist republic | The existence of time travel | PROSE: Falls the Shadow |
| Andrea Yates' World | alternate Andrea Yates | TV: Whatever Happened to Sarah Jane? |
| The Trickster's World | Eddie and Barbara Smith | TV: The Temptation of Sarah Jane Smith |
| Ship erased Sarah Jane Smith, Luke Smith and Clyde Langer | Adam Lloyd | TV: The Mad Woman in the Attic |
| Deindum from the future conquered the galaxy | Bernice Summerfield | PROSE: Present Danger, AUDIO: Escaping the Future |
