Let alone farther than their own solar system, for that matter. Apparently before the Blue Lion brought the Paladins to my castle, humans in my world had only started visiting one of their more distant dwarf planet's moons in person.

[And Leia gets a sketchier version of this model of Earth's solar system. More planets or dwarf planets may or may not have been added to this diagram, but the important part is the distance between Earth and Pluto, which stand out a little more in the image.]