After about 4 games to make sure that this wasn't just coincidence, I have come to the conclusion that the game is putting the same artifacts right next to each other on the map, for instance, I have an asteroid planet two jumps from my homeworld, and the next jump beyond that is also an asteroid planet. Both planets have the artifact Kinetic Intensifier on them. Since having two of the same artifact does not benefit me in the slightest, I was just wondering why the game would place the duplicate artifact so closely to the original.