The Galactic Rim (or The Rim) is the region near the edge of the galaxy and the outer reaches of space explored by the younger races. The older races, or the First Ones, have traveled beyond the Rim into the space between the galaxies (Presumably the phrase "beyond the Rim" also applies to those who leave the disk of the galaxy by travelling to the galactic north or south).

"The Rim" is also used as a generic term that refers to the out most extent of known space within the Galaxy itself and as new systems are being charted and explored all the time, the idea of the Rim is an ever changing concept.^[1]

The planet Z'ha'dum is located near the Rim.

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