For what it's worth, I created my own little bubble of explored systems, way out past Colonia, a couple years back. I was out exploring in a section that was completely undiscovered by anyone, and was enjoying the process of tagging planets, looking for good mining locations, and all that stuff.
I found my very first (and still only) Earth-like World (ELW), and decided to tag the entire system so no one else would ever be able to have their name on anything there. Much later, when they added surface mapping, I went back out there and mapped them all, too. I think of it as Codger's System, lol.
I stayed for quite a while, and used the Visited Stars filter on the Galaxy Map to determine which systems around there I had yet to explore. I wound up creating a small bubble of visited systems, all discovered by me.
So that's how I did it. I didn't try to draw a sphere on the map, I just went to the nearest unvisited star, and then the next and the next. It worked well enough for me. It didn't turn out very spherical though
I found my very first (and still only) Earth-like World (ELW), and decided to tag the entire system so no one else would ever be able to have their name on anything there. Much later, when they added surface mapping, I went back out there and mapped them all, too. I think of it as Codger's System, lol.
I stayed for quite a while, and used the Visited Stars filter on the Galaxy Map to determine which systems around there I had yet to explore. I wound up creating a small bubble of visited systems, all discovered by me.
So that's how I did it. I didn't try to draw a sphere on the map, I just went to the nearest unvisited star, and then the next and the next. It worked well enough for me. It didn't turn out very spherical though