In the Star Wars universe, the Star Wars Galaxy, also known as the Star Wars galaxy or simply the galaxy, refers to a vast region of space containing numerous star systems, planets, and other celestial objects. It is a single galaxy that serves as the primary setting for the Star Wars saga.
The exact size of the Star Wars Galaxy is not explicitly defined in the canon sources. However, it is generally described as a large galaxy with a diameter of around 100,000 light-years. It consists of various star systems, including multiple star clusters, nebulae, and sectors.
As for Jedi, they primarily operate within the Star Wars Galaxy. They are trained on various planets and often travel between different systems to fulfill their duties as guardians of peace and justice. While the Star Wars Galaxy is vast and contains countless planets, there is no indication that Jedi or other characters in the Star Wars universe routinely travel to other galaxies. Their focus remains primarily within the known regions of the Star Wars Galaxy.