The progression of Create: Astral finds you working up through 5+ chapters of quests packed to the brim with Create-themed processes and support for limitless automation. Custom recipes have been introduced to support HUGE factories and mass item renewability at a level you may not have seen within the Fabric 1.18.2 Ecosystem.
Planets tie into the progression of the pack. They are not a goal but a path leading you through exploring a fully customized Moon, Mars, and Mercury, featuring worldgen changes, huge structure overhauls, custom oregen, mobs, and more!