Galaxies can take on many shapes and sizes, our own galaxy the Milky Way is a Spiral Galaxy so is naturally divided into a number of spiral arms, never the less it is a common practice as means of general galactic charting by many races to divided the Milky Way into four equal Quadrants.
In addition to the main body of a galaxy, many galaxies also have a number of smaller satellite galaxies and globular star clusters which seemingly orbit the main galactic body. (ST reference: Star Charts)
|multiverse • universe • galaxy|
|Galactic regions:||quadrant • sector • cluster • nebula • star system|
|System bodies:||star • planet • planetoid • dwarf planet • asteroid • meteoroid • comet|