A frigid ice-world, Hudson (G2/R3/A2/P2/H1) orbits its majestic parent once every 37 days-although its actual year is almost four Earth-standard years in length. Because Hudson is fairly close to Caina and orbits in the plane of the gas giant’s equator, the moon endures days-long eclipses on a routine basis. When Hudson is directly between Rinstoke and Caina, the interaction of stellar winds with the gas giant’s magnetic field causes the moon’s auroras to flicker brightly-even in full daylight.
Although its core should have frozen solid eons ago, Hudson remains volcanically active. Caina’s overwhelming tidal forces and the influence of its companion moons drives crustal flexing somewhat akin to that of Io in the Sol system. Unlike Io, Hudson is poor in sulfur and emits steam, carbon dioxide, and molten rock. Hudson’s volcanoes are therefore directly responsible for the creation of a working biosphere on this otherwise barren moon
Hudson’s creatures have adapted to cold so intense that even the hardiest Terran transplants rarely survive a single night. At its warmest, Hudson sometimes gets within 10 or 15 degrees of the freezing mark. At its coldest, significant portions of the atmosphere condense onto the moon’s surface. Most of Hudson’s creatures respond by endless migrations toward areas of volcanic activity or seas heated by geothermal vents. A few species engage in extended hibernation, waking only when their territory warms. The old Orion colonial government of Bluefall built the Baffin Island station back in 2415, and the Regency assumed sponsorship of the post when they took over the Aegis system.