Milky Way
From ExodusWar
The Milky Way is the only galaxy humanity has been able to chart and travel. The galaxy is 80,000 to 100,000LY in diameter, about 250,000 to 300,000LY in circumference, and about 2,300–2,600LY in thickness. The galaxy is estimated to contain 300 billion stars, but only a few thousand of them have been visited, and only a few hundred have been colonized. The galaxy is known by many names, but since Terran culture and language began to dominate trading, the Milky Way became its most common name.
Given that there are at least four natural species in the Milky Way galaxy, it is not unlikely that other galaxies are inhabited. However, hyperspace travel is severely limited by mass: the farther a ship is from a stellar mass, the harder it is to travel. Travel between galactic spiral arms is extremely difficult without a massive energy source.
The Galactic Arms are essentially "continents" of the galaxy. Travel between the Arms is almost impossible without the extremely precise navigation charts necessary for going through the Galactic Core, or the huge power sources necessary to make a hyperspace jump between Galactic Arms.
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[edit] Orion Arm
The Orion Arm is the home of humanity. The Meroniri occupy the region of space closest to the Galactic Core, while the Mesarthrim and the Ixoarchada occupy the area closer to the outer end of the arm.
[edit] Scutum Crux
The Scutum Crux is an "island" of stars rimward of the Orion Arm, and coreward from the Perseus Arm. The Meroniri have made expeditions in the past when the Scutum Crux was close enough to allow normal hyperspace travel, and are now able to make return trips with their Tesseract Drive. It is believed that the Volucris homeworld is somewhere within the Scutum Crux, but it has not been discovered. Most inhabitable worlds within the Scutum Crux are infested with Volucris. No other intelligent species have been found living here.
[edit] Perseus Arm
The Perseus Arm has never been explored by humans, but reports of Ngrligru living in human space indicate that the Ngrligru have traveled here and have been in contact with an intelligent species. The Kimburu living in human space only have rumors, and no solid facts. If these rumors are true, it may explain why the full might of the Ngrligru has never been brought to bear against the Meroniri.
[edit] Sagittarius Arm
The Sagittarius Arm and the Carina Spur are connected together. Only the Sagittarius Arm touches the Core. The Sagittarius Arm is the home of two intelligent species: the Ngrligru and the Sirunaki. The Remnant of the Anthronoris also makes their home somewhere in the Carina Spur, though the locations of their hidden sanctuary worlds are unknown to anyone except the most trusted captains and navigators of the Remnant.
[edit] Cygnus Arm
The Cygnus Arm and the Norma Spur are currently completely uncharted by humans and Ngrligru. It is unknown if the Gorhamut have ever explored this area of space.
