Capítulo 237: The unknown helper of the world 2

There were different grades of stargates the higher the grade the further the distance it could reach, a grade three stargate could be used to travel from one planet to the other, while a grade four could be used to travel within a star system, the same went for a grade five stargate, this would then be used for a star cluster. Although there were many stargates to easily travel the universe, but this didn't mean every planet in the universe had been explored before or had stargate in them, this was why teleportation devices were mostly use.