Fiction:Milky Way Galaxy

The Milky Way galaxy (also known as Mutter's Spiral and many other names) is one of the major galaxies in the First Gigaquadrant. It is a huge spiral galaxy at around 110,000 light years in diameter, full of civilizations, mysteries and much else.

Statistics
The Milky Way is between 100 and 120 thousand light years across, and contains over 400 billion stars. It is one of the largest and most influential galaxies in the Local group of galaxies (partly because many empires in fiction are within it). The Milky Way completes a full rotation about once every 50 million years. The disk is about 1,000 light years thick and the bulge is about 12,000 light years thick. The halo that surrounds the disk and arms is 180,000 light years thick, and contains mostly old stars and hypervelocity stars that have been kicked out of the galaxy by the Galactic core. The Halo is a very poor place to colonize and contains few planets with life and fewer colonies than the disk. The DCP has colonised Far Star, named after a comet in the Chilius system. The Halo also contains globular clusters and some dwarf galaxies that are getting shredded and absorbed into the Milky Way.

Political Division
The Milky Way does not have one dominant faction, but does contain very large and powerful empires. The Milky Way is a very big galaxy compared to most, and has over 400 billion stars, so there is lots of room for many, many factions. Because there is so many, it would be very difficult to create one large alliance or even conquer the entire galaxy, although the DCP's territories are expanding more quickly than most. There was an extinct galactic empire that existed millions of years ago known as the Coadunation of Autonomous Beings, but the members such as the Naucean are thought to have ascended.

"The Civilization"
Due to recent conflicts, some civilizations are joining the "Milky Way" cooperative, neither an alliance or an organization, empires simply combine their efforts to become one Meta-civilization when the need arises, either to gather a new energy source or during a galaxy-wide conflict.

Native Civilizations
There is over 10,000 civilizations inhabiting the Milky Way (although the majority are Tier 6, 5 or 4, avoid contact or are in the far reaches, and remain unknown). Most are very alien, and rarely interact with other empires or are interested in galactic affairs. However, some of the more powerful empires do. Some civilizations don't make it long after their discovery of nuclear energy, this means finding dead radioactive worlds is not too uncommon. The Galactic Core is rather devoid of normal life, due to the intense radiation, with only the harshest of life forms like the Grox surviving, and the Galactic Halo contains mostly low metallicity old stars, meaning life is also less common. Civilizations tend to exist in certain space environments that are calmer, and thus can form quite closely to each other.

''To use this scale, add your empire in each arm by order of Tier's, and note their status. If they didn't evolve in that region but have colonies, add colonies to the list.'' Galactic Core, bulge & bar 3-kpc & Perseus Arm Norma & Outer Arms Scutum-Crux Arm Carina Arm & Sagittarius Arm Orion-Cygnus arm
 * Xeelee (Unknown, Tier 0, fanfic) - Activity of the interuniversal Xeelee has been detected near the core, as their mysterious spacetime ships sweep the stars.
 * Grox Empire/allies (Destroyed, Tier 2, extragalactic) - This menace has been recently defeated.
 * Colonies of the:DCP, Salsetthe, Consortium, Jovar & Gablinus Avis
 * Asgard (Left, Tier 2/1, fanfic) - The Asgard became extinct long ago due to mass suicide. However, their extragalactic cousins returmned to research them.  During the Imperial Civil War, they left.  The Asgard have helped the galaxy in many ways, protecting human, building advanced technology, help in defeating the Ori invasions and the Replicators which would have destroyed the galaxy.
 * Defensive System's Bloc & Iron Bloc (At war, Tier 3, native)- Have similar yet less aggressive ideals with the DCP.
 * Last Goa'uld System Lord (Defeated, Tier 3, fanfic) - Nearly all of the Goa'uld had been destroyed centuries before, however, the might of the Grox was enough to defeat the last hiding the shadows. The only symbionts now are the Tokra, and a few confined on their homeworld.
 * Cephalodian Life Guardians (Thriving, Tier 4, native) - The Cephalodians protect all of the interests of life in the galaxy.
 * Colonies of the:
 * Galactic Empire (Left, Tier 1, fanfic) - Came frome a mysterious galaxy but then left again during the Imperial Civil War.
 * Cognatus Alliance (Thriving, Tier 1, extragalactic) - Control many systems on the edge of the galaxy
 * Jovar Empire (Splitting, Tier 2, native) - The Jovar were created by humanity, and look after Earth since humans left it.
 * Doriaca Kingdom (Returning, Tier 2, native) - Now returning to their home.
 * Dominion (Extinct, Tier 3, fanfic) - Now extinct when they plunged into a civil war.
 * New Trucinex Imperium (Unknown, Tier 4/3, native) - They were defeated during the Trucinex Wars, but it is unknown where they have gone now.
 * Hogomoth Refuge city ships (fleeing, Tier 3 (once), native) - Hunted across the galaxy.
 * Colonies of the:CoreFed Commonwealth of Jave'ruii
 * Delpha Coalition of Planets (Thriving, Tier 1, native) - The DCP is one the most powerful residents.
 * Seven Starr Alliance/DCP allies (Growing, Tier 1, extragalactic) - In order to suuport the DCP, several of their allies had a few colonies in the galaxy.
 * House of the Krassio (Thriving, Tier 1, extragalactic) - The Krassio watch for Xhodocto activity.
 * CoreFed Commonwealth of Delpha (Steady, Tier 1, extragalactic) - Colonized near the Delpha Sector in secret, much to the anger of the DCP.
 * United Republic of Cyrannus (Thriving, Tier 2/1, extragalactic) - The URC currently doesn't have much interest in the Milky Way.
 * Rambo Nation (Thriving - The Rambo created several embassies for diplomatic means.
 * Royal Forion Galactic Senate (Steady, Tier 3, extragalactic)
 * Colonies of the:
 * Salsetthe Republic (Thriving, Tier 2, native) - The Salsetthe Republic is probably one of the most powerful residents.
 * Species 8472 (Invading, Tier 2/1, fanfic) - These transdimensional aliens wish to eradicate all life in the galaxy.
 * Borg Collective (Recovering, Tier 2, fanfic)
 * Vartekian Empire (Growing, Tier 2, extragalactic) - The Vartekians plan to conquer the galaxy.
 * More Near-Humans (Recovering, Tier 3/2, fanfic) - Delta Quadrant races (Star Trek)
 * Taxton Republic (Thriving, Tier 3, native) - One the richest and largest empires in the Milky Way.
 * Sylit Republic (Steady, Tier 3/2, extragalactic)
 * Colonies of the:Human Republic, CoreFed Commonwealth of Taxton
 * First Ones (Moved, Tier 1, fanfic) - The Culture, Forerunners, Vorlon, Shadows, Walkers of Sigma-957, Time Lords, Sphere Builders, Naucean & Xynaxes were ancient races billions of years and unimaginingly powerful. Many had left or ascended, or had become extinct leaving only relics, while some stayed to guide the young races.  In the Imperial Civil War, they left beyond the Rim in gave the DCP the responsibility of the galaxy.
 * New Dalek Empire (Thriving, Tier 1, fanfic) - The Daleks are now gripped in a devastating war with Species 8472.
 * Gablinus-Avis (Thriving/moving, Tier 2, native) - The Gablinus Avis are powerful nation, however, they are moving to another galaxy.
 * Human Republic/Near-Humans (Thriving, Tier 3/2, native/fanfic) - Humans and Near-humans (Klingons, Romulans, Minbari etc) have a long history in the galaxy and have become a major influence. Recently they have united into a Republic.  Occasionally, the Wraith attack their weaker systems.
 * Bearian Nations Space Command (Expanding, Tier 3, native) - The BNSC are desperate to expand.
 * Covenant (Extinct, Tier 3, fanfic) - A fanatical empire which caused problems until the Daleks eradicated them in a day.
 * Reckzo (Growing, Tier 4/3, native) - The Reckzo are a promising empire, and have began to collect star energy.
 * Dragonisk (Unknown, Tier 4, native) - A small but hostile empire.
 * Colonies of the:Jovar (Sol system), SSA (Sol system)

Galactic Halo
 * Neanderthal Empire (Expanding, Tier 3, native) - Taken by aliens shortly before their extinction, Neanderthals plot about retaking Earth and revenge on humanity.
 * Colonies of the:DCP (Observatories and dark matter detectors), Pirates and Mercenaries, Loron holdings