Arbre

First Appearance and Context

Arbre is invoked in rites and daily life within a math’s Mynster, where the great clock’s motions organize communal time. The world’s name anchors formal dating in the A.R. era used on citations and records (e.g., “A.R. 3000”), see A.R..

World and Society

Arbre is the home of the avout and their institutions within the Mathic World, as well as the communities outside the walls (extramuros). The term “Arbre” is used broadly in speech and reference to mean both the planet itself and the lived world of its peoples.

Astronomy and Observation

Rooftop observing sites such as the Starhenge couple timekeeping to skywatching. A fixed all‑sky device known as Clesthyra’s Eye records the entire sky, registering star trails and the straight or curved tracks of fast‑moving objects. Historical materials and teaching place Arbre’s industrial past in the Praxic Age, a period that precedes major reforms in the present era and is often cited in discussions of large‑scale projects and orbital pragmatics.

Climate and Population History

Accounts describe that after the Terrible Events, climates became hotter and drier and populations tended to drift poleward. Later, reductions in atmospheric carbon dioxide reportedly gentled conditions, and people moved back toward the equator to avoid increased solar radiation nearer the poles. These shifts inform present‑day remarks about where most people live on Arbre.

Current Orbital Activity and Debates

Observers have reported sequences of brief bluish flares crossing a sunlit projection, interpreted by some as propulsion “sparks” from an object maneuvering in Arbre‑centered orbit. Subsequent measurements inferred a plane change into an orbit inclined at roughly fifty‑one degrees, whose ground track never exceeds about forty‑five degrees of latitude—encompassing where the great majority of people reside. On one night, a visible red beam illuminated a northern math; smoke raised within its walls made the beam’s last span show clearly, and onlookers also picked out a small red point arcing across the sky in the same direction. Taken together, these observations support the view that a craft in a non‑polar path (contrasted with classic Polar Orbits) has been mapping or studying Arbre on successive passes. The origin of the object remains a matter of discussion.

Current Status/Location

Arbre is inhabited and active. Maths continue rites, studies, and winding; at some sites, hierarchs have temporarily restricted rooftop access, so observing proceeds via permitted means while world events unfold beyond the walls.

Summary:

The inhabited world on which the mathic communities and the extramuros society live. It anchors local timekeeping and skywatching and is referenced in accounts of a past near-miss by a large asteroid.

Known as:
Arbre