In this vast universe, the most critical reliance for interstellar travel is the Star Realm Tunnel.
A single Star Realm Tunnel connects two star systems, compressing distances that span hundreds, thousands, or even tens of thousands of light-years into a journey of just a few days, at most around a month.
Cosmic ships, starships, that possess the capability to enter a Star Realm Tunnel essentially enter a state of hyperspace upon doing so.
The normal state of travel for a starship in the cosmos is to navigate at sub-light speed within a star system, from one jump point to the next, then into a Star Realm Tunnel, arriving at another star system, and finding the next jump point...
This necessitates the use of star charts, as well as navigators.
These individuals are trained spiritual energy practitioners.
Only they are capable of distinguishing the exact locations of Star Realm Tunnel jump points in the void of space, guiding the ship through the tunnel to the other side.