Galaxy

A galaxy was a massive, gravitationally bound collection of stars, planets, nebulae, black holes and other astronomical objects. Normal galaxies stored ten million to one trillion (107 to 1012) stars, which all orbited around a central point, which contained a supermassive black hole.

Known galaxies
The rest are completely unknown.
 * the galaxy - the home of most known life in the Universe, civilisation and the Galactic Republic.
 * Yuuzhan Vong Galaxy - home of the Yuuzhan Vong civilisation.
 * Rishi Maze - a satellite galaxy located north of Kamino.
 * Firefist - also known as Companion Besh.
 * Companion Cresh
 * Companion Dorn
 * Companion Esk
 * Companion Forn
 * Companion Grek