Galaxy

A galaxy is a massive, gravitationally bound assemblage of stars, an interstellar medium of gas and dust, and an unknown type of dark matter. Typical galaxies contain ten million to one trillion (107 to 1012) stars, all orbiting a common center of gravity. Galaxies can also contain a large number of multiple star systems and star clusters as well as black holes and various types of nebulae.

The Intergalactic Void is the space between the galaxies

Known galaxies

 * "The galaxy," where most known life, civilization, the Galactic Republic, and the Force originate.
 * Yuuzhan Vong Galaxy, the home galaxy of the Yuuzhan Vong.
 * Rishi Maze, a satellite galaxy located north of Kamino.
 * A second satellite galaxy orbiting "the galaxy."
 * Thousands of other galaxies in the universe, including ones whence some mystery ancient species came, or the one the Brodo Asogans visited.