Mutter's Spiral

Mutter's Spiral was the Time Lord designation for the galaxy in which Earth's solar system was located. (TV: The Deadly Assassin, The Invasion of Time)

Naming
Mutter's Spiral was named after Stellion Mutter. (PROSE: The Taking of Planet 5)

Humans knew Mutter's Spiral as the Milky Way or as Adric referred to it, Galaxia Kyklos. (TV: Four to Doomsday) By the time of Sabalom Glitz, it also went by the name of the Stellian Galaxy. (TV: The Mysterious Planet) At least one Gallifrey-based robot — K9 Mark II — recognised the galaxy both by the name "the Milky Way" and by "Mutter's Spiral". (WC: Shada) During the War in Heaven, it was also known as Mutter's Cluster. (PROSE: The Taking of Planet 5) According to the Aubertides, Mutter's Spiral was in the Stellarian Galaxy, with Gallifrey near the galaxy's core. (PROSE: Human Nature) Castellan Spandrell informed President Romana of a Fortean Flicker across the Stellarian Galaxy. It was traced to the planet Hogsumm. (PROSE: The Highest Science, Happy Endings)

Size
Mutter's Spiral was approximately one hundred thousand light-years in diameter. (PROSE: The Eyeless)

Neighbours
Mutter's Spiral's nearest significant neighbouring galaxy was the Andromeda Galaxy. It was also surrounded by several nearby minor satellite galaxies, such as Galaxy Seven, (PROSE: The Eyeless) and the two dwarf galaxies the Larger Magallenic Cloud and Smaller Magallenic Cloud. (AUDIO: The Last Voyage)

History
The Doctor frequented Earth, a planet in Mutter's Spiral. (TV: An Unearthly Child, et al.) On one occasion, Earth was moved out of the galaxy to the Medusa Cascade by the Daleks. (TV: The Stolen Earth)

The Dark Empire was a period of tyrannical galactic rule by a mysterious and reportedly immortal entity called Horath, who crushed the civilisations of all but the most primitive planets. Horath was ultimately defeated circa 1000 BC, but could not be killed, so his body and his consciousness were divided and they were hidden at opposite ends of the galaxy. (TV: Enemy of the Bane)

As recalled by Leef Apple Glyn Slitheen-Blathereen, while some Slitheen faced justice on Raxacoricofallapatorius, others fled to the farthest reaches of the galaxy. During an ultimately failed attempt to use a matter compressor to turn Earth's carbon atmosphere into a diamond, a Slitheen predicted that this would make the Slitheen the richest family in the galaxy. (TV: The Gift)

The Uvodni homeworld was located in the Spiral Cluster of the Dragon Nebula, thirty four thousand light years "across the galaxy" from Earth. The Uvodni were part of a planetary alliance that fought the Malakh in the Ghost Wars of the Horsehead Nebula, which was ended with an armistice by 1998. (TV: Warriors of Kudlak)

In 2009, Commander Kaagh acquired the consciousness of Horath in the Kaldeann Cluster on behalf of the Bane Kindred; by reuniting it with Horath, it would have allowed them to take over the galaxy. However, Kaagh joined forces with Mrs Wormwood, a rogue Bane, and the two plotted to become emperors of the galaxy together. Wormwood vowed that the galaxy would tremble when the Eye of Horath opened. Ultimately, however, Kaagh was betrayed by Wormwood, and so he threw her and himself into a portal containing Horath's body, which had briefly opened at Stonehenge on Earth. (TV: Enemy of the Bane)

One of the Nine Gallifreys was first destroyed during the Battle of Mutter's Cluster. (PROSE: The Taking of Planet 5)

The Dalek Empire of the Seriphia Galaxy invaded this galaxy twice, approximately 2500 years apart. (AUDIO: Dalek Empire)

Humanity was confined to Mutter's Spiral until the discovery of the intergalactic drive in the 54th century. (AUDIO: The Star Men)

The Eighth Doctor recalled a saying in the Academy about how the beat of a butterfly's wings in Mettula Orionsis caused a time storm in the Mutter's Spiral. (AUDIO: Storm Warning)

The Eleventh Doctor granted a referee the ability to watch every football game in the galaxy. (COMIC: Bow-ties for Goal Posts)

Galactic trends
Oseidon had the highest radiation level in the galaxy. (TV: The Android Invasion)

Binary vascular systems were not common in sentient species. (PROSE: Tragedy Day)

Commander Kaagh, of the Tenth Sontaran Battle Fleet, described humans as "the runts of the galaxy". (TV: Enemy of the Bane) The Tenth Doctor claimed humans were the only species in the galaxy to invent edible ball bearings. (TV: Fear Her)

A member of the Slitheen family boasted that they had officially the "best nostrils in the galaxy". (TV: Revenge of the Slitheen)

Bea Nelson-Stanley recalled that her husband described the Sontarans as "the silliest race in the galaxy".

Sarah Jane Smith promoted the Viszeran Royal Fleet, which was due to pass through Earth's solar system, as the "most magnificent stellar light show this side of the galaxy". (TV: Eye of the Gorgon)

Mark Grantham believed that money was what made the galaxy go round. (TV: Warriors of Kudlak)

Sarah Jane noted that telekinetic energy fetched a huge price in some parts of the galaxy. She speculated that the Slitheen could have got the plans for the telekinetic energiser from the other side of the galaxy before building it on Earth. (TV: The Lost Boy)

Luke Smith claimed that Mr Smith, a Xylok, was the smartest life form in the galaxy. (TV: The Day of the Clown)

Clyde Langer, while under the influence of the Ancient Lights, observed that Aero was in conjunction with the galaxy. (TV: Secrets of the Stars)

Mr Smith observed that a Slitheen-Blathereen ship could travel halfway across the galaxy within a day. (TV: The Gift)

There were no metamorphic insectoids in the Galactic vector containing the Mutter's Spiral. (TV: The Unicorn and the Wasp)

Tivoli was the most conquered planet in this galaxy, leading to its inhabitants (like Gibbis) welcoming invasion and subjugation. (TV: The God Complex) Earth, however, was the most invaded planet, not only in the Mutter's Spiral but in four more galaxies. (PROSE: Borrowed Time)

Xaos was said to be the oldest planet in the galaxy. (COMIC: The Warrior's Story)

Miss Delphox promoted the Bank of Karabraxos as the "greatest bank in the galaxy." Indeed, the Twelfth Doctor noted it to be the most secure bank in the galaxy. (TV: Time Heist)

The Akoshemon system, and indeed its planets such as Akoshemon itself, were located right on the very edge of this galaxy, so much so that from Akoshemon's moon you could see the gap between this galaxy and its nearest one. (PROSE: Fear of the Dark)

Planets and star systems
Mutter's Spiral had around 150 billion stars (AUDIO: The Apocalypse Element) and 100 billion habitable planets, (PROSE: Harvest of Time) six hundred and fifty million of which were Class-M planets orbiting main sequence G-class stars, according to statisticians. (PROSE: Sanctuary)

Divisions
Mutter's Spiral was divided into four quadrants. In the Third Quadrant there were at least 8,023 sectors, with Sector 8023 containing Earth. (TV: Logopolis) Another sector was the Kappa Galanga sector, which contained the Lasron solar region. (PROSE: Prisoner of the Daleks) There were several galactic arms, including the Perseus arm where Mogar was located, (TV: Terror of the Vervoids) a western arm (PROSE: Between the Wars: A Slow Night in Paradise) and a secondary and tertiary arm. (PROSE: Burning Heart)

Politics
There were several forms of galactic government. The Galactic Alliance was one governing body. (TV: From Raxacoricofallapatorius with Love) It was also under the dominion of the Shadow Proclamation. (TV: The Stolen Earth)

At one point in their history, the Rutan Host controlled the whole Mutter's Spiral; later the Sontarans had driven them to the far fringes of the galaxy. (TV: Horror of Fang Rock)

Other references
Mockingly imitating Davros, Emperor of the Imperial Daleks, the Seventh Doctor cited conquering the galaxy amongst his goals. (TV: Remembrance of the Daleks)

John Hart offered Jack Harkness "the glitter of the galaxy". (TV: Kiss Kiss, Bang Bang)

Rani Chandra suggested that Sky Smith's parents were "scouring the galaxy" in search of her. (TV: Sky)

Espiral de Mutter Calea Lactee