N-Space

The prime universe of Gallifrey had several titles: it was Normal Space or Normal-Space, N-Space for short, in relation to the smaller E-Space; (TV: State of Decay, Warriors' Gate, PROSE: Christmas on a Rational Planet, Lungbarrow) to the Division, it was Universe One in relation to the parallel Universe Two; (TV: Survivors of the Flux) in relation to the fourth universe, it was the third universe; (AUDIO: Quinnis, PROSE: Auteur's Abecedarium, Resurrection of the Author) and it was also generally known within and abroad as the Totality. (PROSE: Collective Unconscious, A Bright White Crack) Donna Noble once referred to this universe as the Doctor's World. (TV: Turn Left) Inhabitants of this universe also distinguished it from virtual realities; Second Reality gamers referred to this universe as fleshspace (PROSE: Another Life) and users of Shadow-Space called it Home D. (AUDIO: Masquerade) The part of the universe which was known was referred to as the known universe. (TV: The Invasion)

According to the Eleventh Doctor, the universe was born alive, but it could only become aware of itself by developing sensors across its surface, known as life forms, each of which suffered a temporary delusion of separate identity during data collection - called consciousness - but in reality had little to no individual existence. (PROSE: The Day of the Doctor) At the dawn of its formation, an abstract entity called the Solitract attempted to join the universe's laws and concepts, but it was incompatible with the other "pieces" of its existence, and threatened their coming together into a single whole. It was only after banishing it to the Solitract plane that N-Space could properly form. (TV: It Takes You Away)

The reason that good always prevailed in the universe (TV: Twice Upon a Time) was because of the Renegade Time Lord known as the Doctor, whose intervention in the lives and planets across time and space helped keep the universe together. (TV: The Time of the Doctor) The greatest threat to life in the universe came from the highly xenophobic species known as the Daleks, which sought to exterminate all non-Dalek life, (TV: The Parting of the Ways, et al.) resulting in them often coming into conflict with the Doctor, who always seemed to triumph over the exterminators. (COMIC: The Lost Dimension) The greatest enemies of each other, (TV: Victory of the Daleks, et. al) the lives of the Doctor and the campaigns of Dalek race were both intertwined within each other, becoming one of the few, if not the only, constant in the Doctor's existence. (COMIC: Harvest of the Daleks)

According to the First Doctor, aeons were but a "blink of an eye" relative to his universe's lifespan. (AUDIO: Daybreak) Indeed, the end of the universe was projected to occur in either 60,000,000,000 (AUDIO: Zagreus) or 100,000,000,000,000 AD, (TV: Utopia) and it began 13,500,020,012 years before 2109. (PROSE: Transit) In yet another account, "four-and-a-half billion years" was referred to as "half the lifetime of the universe" by the Eleventh General and was the span of time separating the 21st century from the temporal position of Gallifrey at "the extreme end" of the time continuum. (TV: Hell Bent)

According to the Tenth Doctor, the universe contained millions, (TV: Planet of the Ood) potentially trillions of galaxies while constantly expanding. (PROSE: The Last Dodo)

It is notable that a few sources claimed that more than one version of N-Space existed. By these sources, not all accounts of N-Space took place in the same reality. (PROSE: Spiral Scratch, AUDIO: Zagreus)

Entropy
Because of entropy, N-Space should have ceased to exist as a result of heat death some time before the 20th century in the Humanian Era, if not for the Logopolitans. The Logopolitans used Block Transfer Computations to create the CVEs to vent entropy from N-Space into E-Space. (TV: Logopolis) Sometimes the CVEs also allowed physical objects to travel from N-Space into E-Space. (TV: Full Circle)

Co-ordinates
Unlike E-Space, which used coordinates with a negative value, relative to the navigational system of the Doctor's TARDIS, N-Space used positive coordinates. The Fourth Doctor suggested, then, that N-Space was a positive universe and E-Space its negative counterpart.

The TARDIS scanner continued to show images of N-Space even after materialising on Alzarius, which had the same co-ordinates as Gallifrey, though reversed. The Doctor suggested that, rather than relaying visual information, the scanner operated off the absolute value of the co-ordinates and could not process negative coordinates. The scanner system was made functional by replacing its original N-Space image translator with one native to E-Space. (TV: Full Circle)

The Gateway, whose co-ordinates had a zero value (neither positive nor negative) served as a place of transit between N-Space and E-Space. (TV: Warriors' Gate)

The Temple of Atropos on the planet Time, constructed to channel all time in this universe and anchor it to a single timeline, (TV: Once, Upon Time) also had space-time co-ordinates of "zero", which the Thirteenth Doctor thought was impossible. (TV: War of the Sontarans)

Transit points
Aside from the Gateway, objects could have passed from N-Space to E-Space through a CVE, as did the Doctor's TARDIS. (TV: Full Circle) The Great Vampire travelled to E-Space from N-Space by means unknown, as did the human ship, the Hydrax. The Doctor surmised that the Hydrax was intentionally brought into E-Space by the Great Vampire. (TV: State of Decay)

N-Space existed side-by-side with a reservoir of evil that was made of manifest suffering and fear. There were weak points that Dr Colin Dove termed "synapses" through which, at perihelion when the two worlds were at their closest, the evil force could come through with the help of powerful sensitives. The land that Hawthorne was built upon was one such example. (HOMEVID: The Zero Imperative)

History

 * For a detailed, N-Space-focused history, see timeline.

Origin
During the first period, there was an "empty void", (TV: Terminus) then matter exploded outward in the form of hydrogen. (TV: Castrovalva) Event One filled the multiverse with new matter, new energy, and new life. (PROSE: The Quantum Archangel)

Dark Times
Life in the universe began in the Dark Times, with the Old Ones emerging in the First Proliferation. (PROSE: The Knight, The Fool and The Dead) The earliest known species included the Hond, (COMIC: Defender of the Daleks), the Kamishi, also known as the First Race. (AUDIO: The Rulers of the Universe) and the Olympians, which spread life across the rest of the universe using the life spores (COMIC: The Life Bringer!) After a millennia lying low, the Kotturuh began spreading across the universe to distribute mortality, instigating the Kotturuh crisis. (PROSE: The Guide to the Dark Times)

The Time Lords of Gallifrey, as the first sentient culture to develop within their universe, (PROSE: Lucifer Rising) were responsible for setting the parameters within which the universe operated. (PROSE: Sky Pirates!) Their civilisation was founded by Rassilon, (TV: The Deadly Assassin) Omega, (TV: The Three Doctors) and an other, (PROSE: Remembrance of the Daleks) The Time Lords expunged magic in favour of science as the basic governing principle (PROSE: Cat's Cradle: Time's Crucible, Christmas on a Rational Planet) and also established the morphic field that favoured the development of humanoid life. (PROSE: Lucifer Rising) They established the Web of Time which guaranteed the universe a stable, linear history, (AUDIO: Neverland) achieving control of time through the six Mouri in the Temple of Atropos on the artifical planet Time. (TV: Once, Upon Time) For 10 million years, the Time Lords held absolute power. (TV: The Ultimate Foe)

The young universe saw many conflicts such as the war between Gallifrey and the Great Vampires, (TV: State of Decay, PROSE: The Pit) the Racnoss Wars, (AUDIO: Empire of the Racnoss) the Time Wars, (COMIC: Black Sun Rising, PROSE: Sky Pirates!) and the Great Inferno. (COMIC: Terrorformer) Two alliances were known to have been formed during this era, the Fledgling Empires and the Alliance of Races, both including Gallifrey. (PROSE: A Brief History of Time Lords, COMIC: Terrorformer)

Following disastrous interventions on Klist, Plastrodus 14, (PROSE: The Quantum Archangel) and Minyos, the Time Lords adopted a strict policy of non-interference, whereby they would only observe the wider universe. (TV: Underworld) In secret, the Division continued interventions for when policy and reality diverged, (TV: The Timeless Children) as did the Celestial Intervention Agency. (TV: The Deadly Assassin)

In 150 million BC, the threat of the Mad Mind of Bophemeral led to numerous species collaborating against it in the Millennium War, which lasted a thousand years. After the Mind's defeat, the Guardians of Time erased all memory of the conflict. (PROSE: The Quantum Archangel)

The Doctor's travels
The Doctor ran away from Gallifrey for "many pressing reasons". Travelling across time and space righting wrongs, the Doctor had a profound impact on the universe, (TV: Twice Upon a Time) becoming a "figure of legend" (TV: For Tonight We Might Die) who fought evil where-ever and when-ever they found it. (TV: Twice Upon a Time, et. al) They left a particular impact on Earth, with the police box shape of their TARDIS even becoming a part of humanity's race memory. (COMIC: Hunters of the Burning Stone) The Doctor was a part of the Thals' legends, (TV: Planet of the Daleks) a noble of Draconia, (TV: Frontier in Space) and remembered in the Ood's songs. (TV: Planet of the Ood) River Song believed that the meaning of the word doctor itself derived from him. (TV: A Good Man Goes to War)

Due to repeatedly foiling their plans, the Doctor became the sworn enemy of the Daleks, known in their legends as "the Oncoming Storm". (TV: The Parting of the Ways) It was the Doctor who kept the Daleks in check and stopped them from conquering all of space and time, (COMIC: The Lost Dimension) only for that to make the Daleks grow stronger in fear of them. (TV: Asylum of the Daleks) The Doctor also became a sworn enemy of the Sontarans, (TV: The Sontaran Stratagem) the Black Guardian, (TV: The Visitation) the Cybermen, the Nestene Consciousness, and countless other foes they bested in the name of protecting the universe. (PROSE: Revenge of the Nestene) As was observed by Joan Redfern, one could not have the Doctor without having the monsters as well, and vice versa. (TV: The Family of Blood)

Twice the Doctor was put on trial by the Time Lords for his interference in the universe, with the first sentencing him to exile on Earth, (TV: The War Games) and the second collapsing due to the revelation that the prosecutor was a twisted future version of the Doctor himself. (TV: The Ultimate Foe) On numerous occasions, the Time Lords secretly used the Doctor as a deniable agent, most notably attempting to have him avert the creation of the Daleks. (TV: Genesis of the Daleks)

Linear history
"Ten thousand years" prior to 2009, according to the Tenth Doctor, the war between the Sontarans and the Rutans began. (TV: The Poison Sky) Prior to the non-interference policy, Gallifrey attempted to arbitrate to no avail. (PROSE: A Brief History of Time Lords) The war raged for thousands of years. (TV: The Sontaran Experiment)

Millions of years before humanity's era, the Silurians and Sea Devils dominated Earth. Their era came to an end when their scientists mistook the arrival of the Moon for an imminent threat, prompting the species to enter hibernation to survive. Due to the predicted cataclysm never happening, their hibernation system failed to reawaken them. (TV: Doctor Who and the Silurians, The Sea Devils)

Centuries before the 21st century, (AUDIO: Red Dawn) Mars was ravaged by disasters and the atmosphere was no longer capable of keeping out radiation. This prompted the native Ice Warriors to abandon their planet, (AUDIO: The Judgement of Isskar) though some factions remained in hibernation. (TV: Empress of Mars, AUDIO: Red Dawn)

On Skaro the Thousand Year War raged between the Thals and the Kaleds. In the last years of the war, Davros rose to power in the Kaled Scientific Elite, (AUDIO: Corruption, Guilt) and embarked on the creation of the Daleks, seeing to the devastation of both sides of the war so his new species could rise in their places. (TV: Genesis of the Daleks) Centuries later, the chance visit of the First Doctor to Skaro revealed the survival of the Thals to the Daleks, forcing him to lead the Thals into battle against the Daleks to prevent them detonating a neutron bomb to wipe out all life on Skaro bar themselves. (TV: The Daleks) This incident also alerted the Daleks to the existence of alien life. (AUDIO: The Lights of Skaro)

In the late 20th century, Earth began facing increasing attention from alien life, coming under threat from the Great Intelligence, the Cybermen of Planet 14, Nestene Consciousness, Axos, the Mega, Scorchies, Zygons and Kraals. These incursions were faced by the United Nations Intelligence Taskforce (UNIT), aided by the Doctor mainly in his exiled third incarnation. (TV: The Web of Fear, The Invasion, Spearhead from Space, The Claws of Axos, Terror of the Zygons, The Claws of Axos, AUDIO: The Mega, The Scorchies) UNIT's early history was complicated by temporal anomalies, with the conflicting dates of various operations leading the organisation to establish a dating protocol. (AUDIO: The Split Infinitive, PROSE: The Enfolded Time)

By 1981 the universe had passed the point where it should have succumbed to entropy. The Logopolitans used their Block Transfer Computations to delay the collapse by venting entropy through Charged Vacuum Emboitements (CVEs). The meddling of caused this effort to collapse, unleashing a wave of entropy on the universe as the CVEs closed. The complete destruction of the universe was averted by the Fourth Doctor and the Master reopening a final CVE via the Pharos Project, venting the entropy. The Traken Union was among the casualties, (TV: Logopolis) with the area of space wiped out by the entropy becoming known as the Silver Devastation. (AUDIO: Cold Fusion)

In 1986 the home planet of the Cybermen, Mondas, was destroyed. (TV: The Tenth Planet) This was a part of the Web of Time, (TV: Attack of the Cybermen) The Cybermen survived and went on to settle on Lonsis and Telos, (AUDIO: Human Resources) which they usurped from the native Cryons. (TV: Attack of the Cybermen) Over the following centuries, the Cybermen remained a major threat, primarily to humanity whom they sought to Cyber-convert, and waged multiple Cyber-Wars. (TV: Revenge of the Cybermen, Nightmare in Silver)

In the 1990s, orchestrated an inter-dimensional crisis, endangering the structure of reality, so he could divert dimensional energy to the Tolians and use them to conquer the universe. After numerous incursions from other dimensions centring on Earth, the Seventh Doctor discovered the Master's plan and convinced the leader of the Tolians to stop him. (AUDIO: Dominion)

In 1997, knights from another dimension arrived in the universe at Carbury in search of King Arthur, encountering the Seventh Doctor and UNIT. (TV: Battlefield)

In the 2000s, humanity again began to attract attention from alien life, which the Tenth Doctor attributed to them becoming noisier. (TV: The Christmas Invasion) These included a Slitheen gambit to reduce Earth to molten rock, to sell for profit, (TV: World War Three) and a invasion by the Sycorax which were both foiled by the Doctor. (TV: The Christmas Invasion) In the years that followed Earth was targeted by the Bane, (TV: Invasion of the Bane) Sontarans, (TV: The Sontaran Stratagem, The Poison Sky) and the Skith. (COMIC: The Age of Ice)

In the 2010s, Cybermen from another universe in the Multiverse invaded Earth, seeking a foothold to begin conquering the universe. They were repelled by the combined forces of UNIT and. (AUDIO: Code Silver, Master of Worlds)

The Kasaavin, who hailed from another dimension, spent centuries embedding themselves across the universe as a prelude to invasion. With the assistance of, they attempted to gain a foothold on Earth in 2020 but were defeated by the Thirteenth Doctor, who exiled them back to their realm. (TV: Spyfall)

Through the 21st century, Earth went through a period of chaos, including climate change, ozone degradation, the "oil apocalypse", (TV: The Waters of Mars) the Great Cataclysm, (TV: Aeolian) the hatching of the Moon causing high tides across the planet, (TV: Kill the Moon) and a Korven invasion in 2050. (TV: The Eclipse of the Korven) Despite this humanity made its first steps into the stars, with Adelaide Brooke leading the first settlement on Mars, Bowie Base One, (TV: The Waters of Mars) and the Moonbase hosting the Gravitron to control Earth's weather and T-Mat. (TV: The Moonbase, The Seeds of Death) Humanity successfully defended itself against an Ice Warrior invasion in the Thousand Day War. (PROSE: Transit, GodEngine)

The Dalek Empire occupied Earth in the 22nd century, (TV: The Dalek Invasion of Earth) beginning a long enmity between humanity and the Daleks over multiple Dalek Wars. These included a brief incursion in 2223, (AUDIO: Vengeance) an invasion of Earth's solar system in the 25th century, (COMIC: Invasion of the Daleks) a galactic-wide war in the 26th century, (PROSE: Love and War, Prisoner of the Daleks) a Dalek plot against Earth in 4000, (TV: Mission to the Unknown, The Daleks' Master Plan) which escalated into the Great War, (PROSE: The Evil of the Daleks) and the Second Great Dalek Occupation. (AUDIO: Return of the Daleks)

By the 26th century, Earth was the centre of a spacefaring empire. This empire had tense relations with the neighbouring Draconian Empire, resulting in a brief but destructive conflict. (TV: Frontier in Space) The empire collapsed in the 30th century, under the reign of Empress Forrester, (TV: The Mutants, PROSE: So Vile a Sin) who subsequently led the Earth Alliance, (PROSE: Flight of the Cyberons) a looser military alliance of Earth and its colonies. The Alliance fought against the Eminence, (AUDIO: Destroy the Infinite, Rule of the Eminence) the Cyberons, (PROSE: Flight of the Cyberons) and the Knights of Velyshaa. (AUDIO: The Sirens of Time)

By the 40th century, (PROSE: Legacy) the Galactic Federation existed, with its members including Earth, Mars, Alpha Centauri, Arcturus and Peladon. (TV: The Curse of Peladon) The Federation fought Galaxy 5 in a war. (TV: The Monster of Peladon)

A new human empire, the Second Great and Bountiful Human Empire, existed by the 42nd century and spanned multiple galaxies. This empire oversaw the mass enslavement of the Ood by Ood Operations until a revolution liberated them. (TV: Planet of the Ood)

The Daleks became trapped in a logical stalemate in a war with the robotic Movellans, due to both sides relying on logical battle computers. They retrieved their dormant creator from the ruins of Skaro but Davros was captured by their human slaves who rose up against them. (TV: Destiny of the Daleks) The Daleks subsequently lost the war due to the Movellans developing a virus so rescued Davros from human custody in 4590, (PROSE: Resurrection of the Daleks) in hopes of him providing a cure, however he turned on them deeming them failures. (TV: Resurrection of the Daleks) Exploiting the ongoing galactic famine, he established himself as the Great Healer on Necros and secretly created a new species of Daleks. (TV: Revelation of the Daleks) This schism resulted in a civil war between Davros' Imperial Daleks and those loyal to the Dalek Supreme, culminating in a gambit by both sides to seize the Hand of Omega, which was actually a trap arranged by the Seventh Doctor to end the civil war and destroy Skaro. (TV: Remembrance of the Daleks) Accounts differed as to outcome following this gambit, with one claiming the Dalek Prime subsequently arranged a civil war to assert its leadership over the Daleks, (PROSE: War of the Daleks) whilst another claimed a surviving Imperial Supreme declared itself Emperor and founded the Restoration Empire. (PROSE: The Restoration Empire)

The 51st century saw the Great Breakout, a new wave of human colonisation among the stars, (TV: The Invisible Enemy) whilst Earth endured a new Ice Age and World War VI against the dictator Magnus Greel. (TV: The Talons of Weng-Chiang) The Church was a spacefaring power in this era. (TV: The Time of Angels)

In the 53rd century, the Dalek Hive encountered Daleks of a parallel universe who had fallen into the universe at the Magellan Cluster via a spatial rift. (COMIC: Fire and Brimstone)

Circa 6087, (AUDIO: Wirrn Isle) humanity abandoned Earth due to the impending threat of solar flares, leaving a few hundred humans dormant aboard Nerva Beacon to resettle once the danger had passed whilst the rest of humanity embarked on a new wave of colonisation. (TV: The Ark in Space) The colonists reached Andromeda galaxy where they fought the Wirrn. (PROSE: Doctor Who and the Ark in Space, AUDIO: Wirrn Dawn) A single Wirrn queen made its way to Earth's galaxy and found Nerva, using the dormant humans to incubate its young and causing damage to the systems that prevented their awakening for ten thousand years when Nerva was disturbed by the Fourth Doctor. (TV: The Ark in Space) Nerva colonists subsequently resettled on Earth, (AUDIO: Wirrn Isle) and humanity would later establish the Third, (COMIC: A Fairytale Life) and Fourth Human Empires. (TV: The Long Game)

Humanity would continue to exist in the latest eras of the universe, beyond the frontier in time which Time Lords were forbidden to cross. (TV: Frontios) After Earth finally fell victim to the expansion of its Sun in 5000000000, (TV: The End of the World) humanity founded New Earth, (TV: New Earth) and the species ultimately survived even as the end of the universe neared. (TV: Utopia) The Cybermen also survived near the end of the universe, (COMIC: Supremacy of the Cybermen) as did the Sycorax. (COMIC: Agent Provocateur)

Last Great Time War
The Time Lords fought against the Daleks in the Last Great Time War, "for the sake of all creation" in the Tenth Doctor's words. (TV: Gridlock) The war lasted for centuries in a linear sense, however it more accurately lasted an eternity as both sides fought across time and space. (PROSE: Engines of War) As the Gelth ambassador recalled, "the whole universe convulsed" during the Time War. (TV: The Unquiet Dead)

The war boiled out of control, destroying entire epochs of time and causing collateral damage to whole species. (PROSE: The Whoniverse) Eve's species was wiped out, (TV: The Mad Woman in the Attic) the Zygons lost their homeworld, (TV: The Day of the Doctor) and Nestenia, home to a rapport between the Nestene Consciousness and Embodiment of Gris, fell. (PROSE: Revenge of the Nestene) Numerous species became embroiled in the fighting themselves, including the Deathsmiths of Goth, (PROSE: Meet the Doctor) Ogrons, (AUDIO: Planet of the Ogrons) Brancheerians, (AUDIO: The Uncertain Shore) Tharils, (AUDIO: Lion Hearts) Thals, (AUDIO: Temmosus) and Voord. (COMIC: Four Doctors) The Sontarans sought to join the fighting but were dismissed by both sides. (AUDIO: The Eternity Cage)

In the final battle, "all thirteen" incarnations of the Doctor ended the conflict by relocating Gallifrey to a pocket universe, making the billions of Daleks bombarding it from orbit accidentally destroy one another in their own crossfire. The rest of the universe believed that both sides had annihilated each other. (TV: The Day of the Doctor)

At the cessation of the Time War, the constant shifting timelines which had defined the conflict resolved into a single version of the Doctor's universe, the Post-Time War universe. (PROSE: Dalek: The Astounding Untold History of the Greatest Enemies of the Universe, The Paradox Moon) Without the presence of the Time Lords, the universe became a more risky and dangerous place. Travel to parallel universes was seemingly impossible, (TV: Rise of the Cybermen) and the creation of time paradoxes had a much more dangerous effect. (TV: Father's Day, AUDIO: Divorced, Beheaded, Regenerated) Unaware of how the War had truly ended due to the timelines being out of sync, (TV: The Day of the Doctor) the Doctor believed himself and the TARDIS to be the last of their kinds. (TV: The End of the World, Rise of the Cybermen) His supposed status as the last of the Time Lords was known to the Krillitanes, (TV: School Reunion) the Trickster, (TV: The Wedding of Sarah Jane Smith) and the Fatality Index. (TV: Extremis) In truth, two other Time Lords had survived, the Master and the Monk, (TV: Utopia, AUDIO: Divorced, Beheaded, Regenerated) and Gallifrey itself remained safe in the pocket universe. (TV: The Day of the Doctor) Similarly, the Daleks were believed to be extinct, with humanity, unaware of the war, knowing they had disappeared thousands of years prior to 200100. (TV: The Parting of the Ways) In truth, the Daleks survived through a single Drone, (TV: Dalek) the Dalek Emperor, (TV: The Parting of the Ways) and the Cult of Skaro. (TV: Doomsday)

Survival of the Daleks
The Doctor's TARDIS fell through a crack in the Time Vortex into a parallel universe. Though the Doctor was soon able to return and closed the crack behind him, (TV: Rise of the Cybermen/The Age of Steel) the Cybermen native to the Earth of this universe were able to invade that of N-Space by following the breach created by the Void Ship containing the Cult of Skaro, whom had survived the Time War hiding in the Void. The resulting Battle of Canary Wharf was only ended when the Doctor opened the breach to pull the Cybermen and Daleks into the Void at the cost of being separated from Rose Tyler, who became trapped in Pete's World. (TV: Army of Ghosts/Doomsday) The Cult however escaped to 1930 New York where they attempted to birth a new race of Human-Daleks but were foiled by the Tenth Doctor. (TV: Evolution of the Daleks)

The last survivor of the Cult, Dalek Caan, fled into the Time War itself and retrieved Davros. Together they founded the New Dalek Empire, which developed the reality bomb within the Medusa Cascade, a second out of sync from the rest of the universe. As a result, the barriers between the universes started to weaken. To power the bomb, the Daleks used a magnetron to steal 24 planets from N-Space in 2009, as well as an additional three planets from other time periods. The loss of the 24 planets came as an outrage to the universe, with the architect of the Shadow Proclamation declaring war, intending to seize the TARDIS to wage it. However, the Doctor purposely left the Shadow Proclamation behind as he confronted the New Dalek Empire, who intended to use the reality bomb to destroy the entire multiverse, save themselves. Ultimately, the Doctor and the Children of Time thwarted this plan and returned the stolen planets to N-Space, with the Meta-Crisis Tenth Doctor destroying the New Dalek Empire and the walls of the universe eventually started closing themselves, a process that the DoctorDonna called a dimensional retroclosure. (TV: The Stolen Earth/Journey's End) A single saucer survived and exploited a Progenitor and the Eleventh Doctor to create a New Dalek Paradigm which resolved to return to the Daleks' own time and "begin again". (TV: Victory of the Daleks)

Survival of the Time Lords
The Eleventh Doctor noted 26 June 2010 as the day the universe "blew up" (TV: The Time of the Doctor) in a total event collapse caused by the explosion of the Doctor's TARDIS at the hands of the Silence which, by nature, spread into the past as every sun went supernova at every moment in history, which would have led to the whole universe never having existed along with all other universes. (TV: The Pandorica Opens) However, the Earth remained as the eye of the storm while the remnant of the universe slowly collapsed, with the explosion of the TARDIS taking the place of its sun. In 1996, the Eleventh Doctor used the Pandorica, which contained a few billion atoms or "memory" of the old universe to reboot it in Big Bang Two. At the heart of the explosion, the Doctor was consigned to the never-space between worlds with all memory of him being erased from the universe, however, he was able to return because Amy Pond remembered him. (TV: The Big Bang)

Despite Big Bang Two, a structural weakness or "scar tissue" in the universe remained in the form of cracks in time, one of which was situated above the planet Trenzalore. The Time Lords of Gallifrey, situated in a parallel pocket universe following the Time War, sent out a message through the crack which spread throughout the universe. Though it appeared indecipherable, every sentient being that detected the signal had a feeling of pure, unadulterated dread which led "half the universe" to Trenzalore, where the Doctor found the message to be the Question of his name; by answering, he would give the Time Lords the clear to return to the universe. However, Tasha Lem noted that this would lead to the Time War beginning anew; ironically it was the Silence's attempt to prevent by destroying the TARDIS that created the cracks in the first place. After 900 years, the Siege of Trenzalore ended with the closing of the crack and defeat of the Parliament of the Daleks. (TV: The Time of the Doctor) Eventually, Gallifrey returned to the universe, positioned at the extreme end of the time continuum, for its own protection. (TV: Hell Bent) Gallifrey was ravaged by however, after he discovered the secret of the Timeless Child. (TV: Spyfall)

After the Master exposed the Timeless Child to the Thirteenth Doctor, (TV: The Timeless Children) the Division decided to abandon the universe for the next one, (TV: Survivors of the Flux) and enacted a plan to destroy the universe by unleashing of the Flux in space on 31 October 2021 and releasing the two Ravagers in time. (TV: Once, Upon Time) The Flux destroyed "many galaxies", only failing to destroy everything due to the Thirteenth Doctor colliding her TARDIS with it. Earth was at the epicentre of what remained of the universe. (TV: Survivors of the Flux) A final Flux event, released by the Ravagers to destroy everything left, was foiled by the Doctor by sabotaging a scheme the Sontarans had devised to exploit it, so they were in the path of the Flux along with Dalek and Cybermen forces they'd deliberately lured there, and putting a Passenger form in its path. Combined, they had sufficient matter to resolve the Flux, (TV: The Vanquishers) saving the universe. (TV: Eve of the Daleks)

End of the universe
N-Space was projected to end in varied times, including the years 60,000,000,000 AD, (AUDIO: Zagreus) 100,000,000,000,000 AD (TV: Utopia) and, in an alternate universe, 100,000,000,000,000,000,000,000,000,000,000 (One hundred nonillion, 1032) AD. (PROSE: The Infinity Doctors)

Universal trends
The Twelfth Doctor claimed that the Time Lords of Gallifrey were the "most civilised civilisation" in the universe. (TV: World Enough and Time) They believed that their Matrix was the greatest source of knowledge in the universe. It was said that, upon being introduced to the Matrix, a President of Gallifrey would have more power than anyone in the known universe. (TV: The Invasion of Time) However, the Twelfth Doctor later expressed that even the Matrix had been surpassed by the Dalek pathweb. (TV: Twice Upon a Time)

The Second Doctor described Omega as "one of the most powerful blokes in the cosmos." (TV: The Three Doctors)

The Thirteenth Doctor claimed that a Dalek was the most dangerous creature in the universe. (TV: Resolution) Earlier, the Twelfth Doctor "welcome[d]" Clara Oswald to "the most dangerous place in the universe" when they entered the inside of a Dalek. (TV: Into the Dalek)

The Eleventh Doctor considered the Romans to be the greatest military machine in the history of the universe, greater than even the Daleks. (TV: The Pandorica Opens)

Jack Harkness recalled an Earth saying, taught to him by "a very old, very wise friend", "an injury to one is an injury to all". He went on to claim that when people acted according to that philosophy, the human race was the finest species in the universe. (TV: Children of Earth: Day Four) Earlier, he claimed that that humans were the only race to go camping. (TV: Countrycide)

Warning Ianto Jones against his cyber-converted girlfriend, Lisa Hallett, Jack told him that the Cybermen would be spreading out across the universe before he knew it. (TV: Cyberwoman) The Twelfth Doctor noted that many organic species across many worlds, such as Marinus, Mondas and Planet 14, inevitably made the choice to upgrade themselves into Cybermen, noting his foes "always [got] started". (TV: The Doctor Falls)

Kaagh, of the Tenth Sontaran Battle Fleet, believed that power was the most beautiful thing in the universe. (TV: Enemy of the Bane)

Sarah Jane Smith believed that, in all the universe, only the Doctor could know straight away and help fix the Trickster's perversion of history. Ultimately, however, Sarah Jane was forced to stop the Trickster without him on that occasion. (TV: The Temptation of Sarah Jane Smith)

In 2009, Major Cal Kilburne, actually an undercover Bane, told Sir Alistair Gordon Lethbridge-Stewart that UNIT had to adapt to the challenges of a more hostile universe. Alistair, who served decades prior, considered that it did not get more hostile than in his day. Considering the prospect of joining UNIT, Clyde Langer was "ready to fight the scum of the universe."

Mrs Wormwood suggested that Luke Smith was "quite unique throughout the entire universe. Alone in its darkness, without blood kin. Just as I am." (TV: Enemy of the Bane)

Sarah Jane observed that once one had "seen the universe for real", nothing ever look[ed] quite the same again."

Androvax, who lost his homeworld, believed that the only truth of the universe was death and destruction, noting that all worlds would inevitably die. Luke acknowledged that there was destruction in the universe for billions of years. However, he noted that without destruction, the universe would not evolve, and that survival was really what the universe was about. Sarah Jane concurred: "Parts of the universe are dying all the time. Planets, stars, people. But the amazing part is that it isn't the end. It's only the beginning of something new and exciting being born."

- Sarah Jane Smith

She went on to claim that the "wonderful thing" about the universe was that "you just never know". (TV: Prisoner of the Judoon)

Eve was surprised to find that humans liked being scared, observing that the universe was full of nightmares and they made fake ones. (TV: The Mad Woman in the Attic)

According to Mr Smith, the Shansheeth were known throughout the universe as the carers of the dead. (TV: Death of the Doctor)

According to the Thirteenth Doctor, the Ux were found on only three planets in the whole universe. (TV: The Battle of Ranskoor Av Kolos)

Other references
Jack Harkness observed that the Sex Gas travelled "halfway across the universe for the greatest sex" yet still ended up dying alone. (TV: Day One)

Before his memory was wiped, Mr Smith wished to "let the universe witness the power of the Xylok once more." He believed that the universe was better served by the survival of the Xyloks over the human race. (TV: The Lost Boy)

Jack Harkness boasted that he had "seen the universe." (TV: The Blood Line) He was told by Toshiko Sato, a fellow member of Torchwood Cardiff, that he had shown her the wonders of the universe. (TV: Exit Wounds)

Rupesh Patanjali recalled a woman who took her own life after the revelation of alien life to humanity, explaining that she saw her place in the universe to be tiny. (TV: Children of Earth: Day One)

The Tenth Doctor noted that the Trickster was a creature from beyond the universe, "forever trying to break in to our reality, manifest himself". (TV: The Wedding of Sarah Jane Smith)

Sarah Jane observed that Androvax raged against the universe for the loss of his people. Clyde considered if a whole race of "body-popping aliens" was good for the universe, while Sarah Jane told him that Androvax's crimes did not mean his species was better off extinct. (TV: The Vault of Secrets)

Sarah Jane claimed that "in all the universe [she] never expected to find a family". (TV: The Lost Boy, The Man Who Never Was)

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