This map shows many of the planets, stations, and asteroids referenced in the first three Sentience Wars novels. This is not an exhaustive map of all stations and asteroids (of which there are millions) but it gives an idea of the scales involved. Note that for the Sunny Skies, it takes roughly one week to travel 1 AU.
Home of Jason Andrews and Terrance Enfield, Alpha Centauri is the closest star system to Sol. Proxima Centauri is (the third star in the trinary system) orbits the binary pair at such a great distance that it took significant observation to confirm that it was gravitationally bound to the primary stars.
Humanity has spread far over their seven millennia of starflight. They have spread into neighboring arms of the galaxy, and created vast empires across the far reaches of space.
This is humanity's known extent at the start of the Orion War.
New Canaan is the eventual site of the Intrepid colonists settlement. The system sports four habitable worlds, and plentiful resources to support the building of several megastructures.
Several stories in the Age of the Orion War take place in the Praespe Cluster, which is one of the closest open star clusters to Sol. The red section is the FTL exclusion zone where Faster Than Light travel is not possible and only sub-light ships ply the black. You'll also note the encroaching Nietzschean Empire in the upper right.