How does the Stargate address system work?
There are 39 symbols on the Stargate, each representing a constellation of stars — or more accurately, a point in space. Six points are required to pinpoint an exact location in three-dimensional space (three lines that intersect from the X, Y, and Z axes at a single point). A gate address consists of seven symbols — these six, plus a seventh: the point of origin, which is always the same when dialing from Earth.
