CodexPlanets & SystemsStar types, planet classes and rarities, habitability and temperature.Star types5 star types from Red Dwarf to Blue Giant. Each shapes temperature, habitable zone and solar energy in its system.PlanetsClass (Dwarf / Rocky / Super-Earth), gravity, and visual rarity (from Common to Legendary): everything that defines a planet.Temperature & habitabilityHow a planet's temperature is computed and how it drives habitability, available fields and deuterium production.