|Dark Stars Sphere Map v2|
The Gate Worlds are interconnected (as shown on the map) allowing near instant transportation between adjoining worlds. These permanent gates also facilitate FTL comms and interconnectivity of Dynastic nets. Most (but not all) of the Gate Hubs are under the control Covenant, a politically neutral, ut secretive society of Techno Magi, capable of manipulating the gate workings and reopening the lost portals.
The greatest concentration of Gates exist on Junction, though most of these gate rotes link Junction with other planets and moons within the same solar system. The world is of central importance to the Covenant. Junction is also one of three worlds (Hope, and Minerva being the other two) that for the Inter world Market. A massive street market established on the concourses of the Gate Hubs that allow merchants and buyers to walk between worlds to reach and trade with different stall holders. Essentially one huge marker stretching between three worlds.
Each of the Gate Worlds is also the hub of a local cluster of Beacon Worlds which are accessible through a form of hyperspace. While hyperspace allows FTL transport it is much slower than using the gate network, often taking weeks to reach a destination by starship. As such most Beacon Worlds are considered backwaters by the Dynastic Families. Although there are score of independent operators, and even the Dynasties maintain small fleets, the greatest jump capable power is the Junkers who rebelled against Dynastic authority during the early days of the Sphere.
The Junkers have an unparalleled understanding of hyperspace, many having charted the strange eddies and ripples in the sub-space medium allowing them to make much faster and more accurate jumps than anyone else. The Junkers have long since cast off a planet bound existence to live in space habs, lunar colonies, starships, and the great nomad cities (imagine cloud city with a hyperdrive!). The known jump routes of three of these nomad cities are now marked on the star map.
Notice that the there are limitations on travel, gate travel will only get you so far, starship travel is only part of the answer, as each of the local space zones marked as so far distant from one another it is generally not possible to take a ship from one to another.
Lastly, I did get asked about aliens, well there is an alien homeworld marked on the star map. Thats should give you a clue about one of the alien races that will be included in the Dark Stars setting, but I'm going to leave you to speculate about it.