The Milky Way

The Milky Way
Astrographical
Total stars	300±100 billion
Size	100,000-120,000 lightyears diameter
Galactic arms	Perseus Arm Norma Arm Centaurus Arm Sagittarius Arm Cygnus Arm
Societal
Regions	Deep Core Core Worlds Colonies Inner Rim Territories Expansion Region Mid Rim Outer Rim Territories Tingel Arm Wild Space Unknown Region
Major trade routes	The Earth Run (South Super-Hyperlane) The Northern Dash (North Super-Hyperlane) Southern Loop The Korribanosian Caimien Hyperlane Gallifrey Hyperlane United Earth Hyperlane The High Road Unknown Hyperlane East Western Emergency Lane Unknown Imperial Emergency Lane
Sentient species	Human Imperri Dionysian T'odessi Yautja Tavi'i Ulutki Ishii Various others

[Source]

The Milky Way Galaxy, commonly referred to as just the Milky Way, or sometimes simply as the Galaxy, is the home galaxy of the Earth and billions of other systems which are in turn hoe to thousands of different states. It is agreed that the Milky Way is a spiral galaxy, although observations suggest that it is a barred spiral galaxy. It contains 300±100 billion stars and an additional 50 billion planets, 500 million of which could be located in the habitable zone of their parent star. The Milky Way is part of the Local Group of galaxies and is one of around 200 billion galaxies in the observable universe.

Astrography and Cartography

The Stellar Cartographic Survey is the group most noted for their attempts to map and chart the Milky Way. Though relying heavily on the voluntary contributions of independent states, they have nonetheless amassed a great deal of data.

The current version of the Survey is the Twenty-Ninth Edition.