While out exploring I kept seeing Class I, Class II, Class III, etc. gas giants. I assumed they were classed by size, but a little research shows me I was incorrect.
It's based on the Sudarsky Extrasolar Planet Classification (Click link for much more detail) which I'd never heard of it before. Posted as reference for other interested parties.
Class I: Ammonia Cloud
Class II: Water Cloud
Class III: Cloudless/Clarified
Class IV: Alkali Metal Cloud
Class V: Silicate Cloud
It's based on the Sudarsky Extrasolar Planet Classification (Click link for much more detail) which I'd never heard of it before. Posted as reference for other interested parties.
Class I: Ammonia Cloud
Class II: Water Cloud
Class III: Cloudless/Clarified
Class IV: Alkali Metal Cloud
Class V: Silicate Cloud