Sanctum Universum is a small religious group you can join by picking the ‘Raised Universal’ trait during character creation. Remember though, subscribing to one Starfield religion has the potential to lock you out of interactions with NPCs of different faiths.
While you can technically ‘join’ this faction, it is unclear if the Sanctum Universum is a technically complete faction, or simply a group of religious NPCs.
Sanctum Universum quests
The Sanctum Universum faction provides a number of unique Starfield faction quests with unique rewards and objectives.
Here are all the known Sanctum Universum faction missions:
Starfield missions specific to this faction are not yet known.
Sanctum Universum locations
The Sanctum Universum faction has a presence in the following systems: