Rethis

Rethis tells Kharad when the Deep can be entered. Observatory networks on its bare plateaus watch Oranth’s storms, radiation, magnetic sheets, and upper-atmospheric conditions, then issue the forecasts used to open, delay, or close a descent. The Deep remains inside Oranth; Rethis supplies the warning from above it.

The moon’s 140,000 people occupy buried observatory halls, leeward settlements, and the small towns that maintain them. Thin air, violent winds, dust, and ice-crystal haze make exposed work brief and tethered. Towers survive by being anchored deeply and repaired by crews accustomed to losing a work window without notice.

Kharad funds and protects much of the network, authorizes ordinary official access, and relies on Rethin data for Deep operations. Rethis administers the observatories and their scientific method. It can publish a warning that stops a corridor, but it cannot open that corridor or issue a descent permit.

Dawn custom requires observations to be tested, published, and used in service. Descriers complicate that standard. Towers retain them because an early reading of a magnetic surge can save a convoy, then must decide how to record a warning that arrived before an instrument could verify it.

Evidence has tied the Faithful to Rethis, and Kharad has demanded names, dismissals, and access for its own inspectors. The colleges have yielded names and dismissals in form while refusing permanent inspectors inside the halls. Their defense is also their limitation: Kharad cannot readily replace a Rethin forecast, but Rethis cannot survive the loss of Kharadi protection, funding, or confidence in the people reading the instruments.