Locations 🪐

"Sector" means a region of space, and every one of them is in Sol.

There is no interstellar travel and no interstellar anything. Light takes minutes to an hour to cross the settled volume and ships take months — a scale that only works inside one system. The Sphere is this solar system, developed outward from the sun until the charts run out.

Worlds earn pages inside their sector when they appear in play.

The sectors, sunward out

SectorWhat it is
The Inner SphereThe old worlds and the corporate capitals. Settled, administered, and where law exists
The BeltThe asteroid belt. Contested claims, no authority, and an economy of debt
JoviaNinety-odd moons, the heaviest shipyards in the system, and enough industry to be a sector on its own. Jupiter formally, Jupe casually, the red eye when it is looking at you
The Outer SphereSaturn and Neptune. Cold, slow, expensive, and quietly essential
The KuiperThin rock and long orbits, out to where the charts fail. The Kype to anyone who works it. The only source of new ember

What each sector feels like

The sectors are not just further apart — they are governed differently.

SectorRegisterFeel
The Inner SphereCorporate cyberpunk at megacity density. Owned in layersA city — bureaus, fixers, jurisdictional seams. The danger is a clause
The BeltClan country. Hereditary claims, company scrip, long memoriesAppalachia in vacuum — warmth and suspicion in one breath
JoviaSci-fi aristocracy. Ninety moons, ninety houses, and protocol as lawA court — favour, obligation, insult, precedence
The Outer SphereDozens of moons, natural and built, each with a warden. Rank is measured in how often you are presentA western — the long ride, the standoff, the town that made its own arrangements
The KuiperA scatter of minor kingdoms that share nothing and never mixA hundred small courts — every stop is rules the crew does not know

The through-line: the further out you go, the less an institution can reach you, and the more everything depends on who you are to the people in front of you. Corporate contract, family name, house standing, personal reputation, local custom — in that order, sunward out.

"Frontier" is a condition, not a place. It describes how thinly a thing is held, and it moves. The Belt is frontier country an hour from civilisation; the Kuiper is frontier in the older sense, where nobody is coming. People use the word as an adjective and the setting should too.

Habitability tiers

TierMeaning
gardenEarthlike, open-air livable. Rare and precious
livableComfortable with light infrastructure; domes optional
marginalDomes and habs required; survivable but hard
hostileSuits and short stays; the environment actively kills
uninhabitableRock. Automated rigs and crew-only outposts at best

The Sphere is mostly hard country — marginal and hostile dominate. A garden world is wealth, and everyone knows where they are.