The Shattered Sky

Description

What Nuxan sees when it looks up, and the discipline that grew from trying to explain it.

Catha is intact and unchanged — the white moon still runs its old cycle, and it is now the only predictable object in the heavens. Every calendar on the planet is anchored to it by necessity.

Ruidus is still there, and it is a ruin. The body remains: a hollowed shell, structurally broken, cracked open where Predathos left it. It still presents a disc — a wrecked one, far larger than it should be, since the Malleus Key drew it in close — and it hangs fixed over the Hellcatch Valley and does not move.

Nobody can explain why. The Malleus Key that pinned it was destroyed a thousand years ago in the same period as The Exodus, and the moon simply stayed. A hollow shell should have drifted, decayed, or fallen. It did none of those things. That unexplained fact is the founding problem of Nuxan astronomy.

Around it: the debris. The shattering shed a field of fragments, from dust to the city-sized Crimson Shadow, and these do move — orbiting Nuxan on their own paths, tumbling, catching light, occasionally falling.

Hemisphere split. Because the main body is fixed, only the western hemisphere ever sees it. Over Marquet and the Hellcatch it dominates the sky. In Xhorhas and the east it is permanently below the horizon — the red moon there is scripture and rumor, and only the wandering debris is ever visible. This is the single most important fact about who becomes an astronomer on Nuxan and who doesn’t.

The tides broke when the body was hollowed and part of its mass scattered. The old tide tables became worthless within a generation. It is the most precisely datable consequence of the Exodus — coastal tide logs record the change to the year, and they are more reliable than any scripture.

History

Astronomy in Nuxan is a post-magical and post-industrial discipline, and both halves matter.

In the Age of Arcanum and after, questions about the sky were answered arcanely — scrying, dunamantic modeling, enchanted instruments. When the ley lines decayed and magic was restricted to noble houses and The Luxon’s church, those methods died or became illegal.

What replaced them was engineering. Across the thousand years since the Exodus, Nuxan ran a full industrial revolution — the automaton boom reverse-engineered from the Aeormatons of Eiselcross — and then banned it, after the pollution and the mass displacement of sapient labor. The ceiling on Nuxan astronomy is not what its practitioners know. It is what they are still legally permitted to manufacture. They understand precision optics, mechanical computation and orbital mathematics perfectly well. They cannot legally build the machines that do it.

Three practical needs keep the field alive anyway, all survival-grade, which is why even a hostile regime tolerates it:

1. Navigation. Magical wayfinding died with the ley lines. Caravans and ships need the sky. The fixed body is, ironically, the finest navigational landmark in the western hemisphere — a permanent point that never moves.
2. Tides and calendar. Both were broken and had to be rebuilt from scratch by observation.
3. Impact prediction. Fragments deorbit. A red fall carries Ruidium — corrupting, mutating material — and knowing where one will land, and how badly it will poison the ground, is the difference between a warned settlement and a dead one. The Bassuras astronomers in particular have their work cut out: tracking a live debris field well enough to call impacts is continuous, unglamorous, mathematically brutal labor. It is also the discipline’s strongest claim to protection. The state banned industry and cannot ban the one industrial installation that tells it where the sky is going to fall.

Mechanical Effects

Three strata of hardware, and which one an observatory runs on says everything about its politics:

• Age of Arcanum relics. Ancient, rare, poorly understood, mostly inert since the ley lines failed. Prestige objects more than working tools.
• Second-revolution industrial hardware — the actual workhorses, and most of the best of it is salvage from The Lunar Program. Machine-ground achromatic objectives, silvered glass reflectors of serious aperture, equatorial mounts with clockwork tracking drives, precision chronometers, spectroscopes, photographic plates. Program-grade glass, ground to guide a voyage that never launched, now pointed at the destination from the ground. All of it illegal to manufacture. It is maintained, repaired, cannibalized and fought over. Nobody is making new ones.
• Permitted hand-craft. Legal, and markedly worse. What you use if you can’t get or keep the real thing.

What that hardware can do, and these are the capabilities the plot runs on:

• Astrophotography. Long exposures see what the eye cannot, and — far more important — produce a permanent, reproducible, portable record. See Secrets.
• Spectroscopy. Composition at a distance. They can identify ruidium signatures in an inbound fragment and forecast not just where it lands but how bad the contamination will be. This is the single most valuable service the discipline sells.
• Clock-driven tracking and precise chronometry. The backbone of orbit determination and impact calling.
• Coordinated observation across distance. Baseline separation gives parallax, which gives real orbits — meaning the field is inherently a network, and networks can be rolled up.

Resolution. Between the body being drawn in close and program-grade apertures, the larger objects resolve in genuine detail. Lights. Structures. Movement.

They can see inside the cage. The breach where Predathos left is observable from the ground. A good instrument pointed into the wound looks into a hollow moon and finds nothing there. The emptiness of Ruidus is not an inference or a theory. It is a thing you can put your eye to — and photograph.

The desert cradle. The practice concentrates in the Hellcatch and the Marquesian deserts for the obvious reasons — dry air, flat horizons, a population that navigates trackless ground for a living — reinforced by the hemisphere split, which puts the object directly overhead only here. It also sits comfortably inside Deshretu practice: a faith built on reading an indifferent world accurately or dying produces cold empiricists as a matter of course. The Weathered and the sky-watchers overlap more than either group advertises.

Note on scope — and the central frustration of the field. They can see the moon in extraordinary detail and they cannot go to it. The Lunar Program would have been their route and it never launched; they inherited its glass and none of its reach. The only way to Ruidus is The Umamu Gate — magic rather than engineering, a hemisphere away, in a lake, and metered by Vasselheim authorities who answer to nobody in Marquet. The people who know the most about the moon have the least access to it, and the people who walk on it every season have never seen it in their sky.

Open Design Questions

• The tradition has no name yet. Deliberately left open.
• Are the practitioners organized (an observatory with archived plates and tide logs — a juicier target, but real institutional memory) or atomized (a folk-craft passed hand to hand among caravan masters and pilots — harder to purge, no archive)? A hybrid is plausible: atomized in the deep desert, institutional in Bassuras.
• Who controls the surviving program optics? Since none can legally be built, the stock is finite, political, and already salvaged once.
• Has any Hellcatch astronomer ever actually made it through the Umamu Gate? A single one who did — and came back with firsthand knowledge — would be an extraordinary NPC.
• Why the body stayed fixed after the Malleus Key was destroyed is an open mystery in-world. Whether it has an out-of-world answer is your call — it works either way.

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Related: Ruidus · The Lunar Program · The Umamu Gate · The Crimson Shadow · Children of the Hollow Moon · Deshretu · The Weathered · Hellcatch Valley · Malleus Key · The Exodus · Ruidium · The Falsifiable Dogma