The Origin System
The home star system where the Grineer, Corpus, Tenno and independent communities live atop the Orokin inheritance.
SOL SYSTEMLIGHT SPOILERS
The political map
The Grineer hold sway over wide territory and military production, the Corpus over trade routes and technology. The Ostron, the Solaris, the Syndicates and the colonies carve out independent ground between those two powers.
Orokin strata
Solar Rails, the Derelicts, Lua, Void portals and Prime relics define the infrastructure of the present system. The past is not dead; every faction puts the old technology to a different use.
Doors leading out
The Zariman opens onto the Void, Höllvania onto the past, the Dark Refractory onto memories of Tau. The Origin System remains the centre, but the story has now moved beyond its geography.