A curiosity among the Barystates, the Geminese Dominion is best described as a clerical directory, i.e., theological leaders jointly rule the state. High clerics run every level of administration down to the local level, where mayors are known as vicar, or deputies, of the political clergy, or hierophant.
The beautiful ocean planets of Castor and Pollux are deep within the star’s habitable zone. Both worlds are cherished across The Bary as tourist destinations for the wealthy and patient. A dearth of landmass makes the two worlds laborious to densify, but several floating bluewater cities have been anchored to shallower portions of the seafloor in recent times. Durable aquaculture and horticulture, particularly of the medicinal variety, are the most vital and reliable exports.
The Lucian religion dominates every facet of Geminese life. It places a strong emphasis on ameliorating the suffering of others. The capital of Delphi upon Castor is a spiritual and healing center for many. Perched upon the crest of an inactive volcano, it enjoys an enchanting seaside view of the turquoise world-ocean. Serving the most tourism and pilgrimage, Delphi has become the most secular of the Geminese settlements. Like its twin capital Elpis, it is internationally renowned for its research hospitals.
The Lux system has many celestial anomalies. The Lucian religion places significance on these rare occurrences as an astrological blessing.
Castor and Pollux are approximately the same mass and share the same orbit around Lux. They can do this because they are in a trojan configuration with the gas giant Zeus. Castor orbits Lux along libration point 4 and Pollux along libration point 5, forming equilateral triangles with Lux and Zeus. Castor and Pollux can always see each other in the sky.
Further out in the system, the moons of ringed gas giant Leda also have novel configurations, including the horseshoe orbits of Helena and Clytemnestra, both moons with benign surface environments, requiring only rebreathers for survival.
Abnormally strong exozodiacal dust fills the young star system, brightening the sky with sparkles of glitter, wowing tourists, and presenting a hazard in flight. Geminese engineers are experts in all manner of electromagnetic and ablative shielding.