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The X-universe consists of 50 Systems, with each System being constructed of up to 3 Sectors. Objects in Sectors sit in Zones, which can be considered to be things within radar range of an object. The locoation location of systems and sectors, how they connect to each other, as well as the location of major Factions stations like shipyards and trade stations are the same in any game start (with the exemption of the tutorials).
In total there are 63 sectors linked by Super Highways (between relatively-close sectors in a system), Orbital Accelerators (between very distant sectors in a system) or Jump Gates (between systems). You may also occasionally discover Anomalies, which provide 1-way routes to a position in another sector. For further details about the features that connect systems and sectors, see the The X-Universe And Map page of the manual. Basics on how to efficently efficiently travel through the universe can be found on the Piloting And Travel page.
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