I actually like that (and since I see the light, they didn't spawn near each other in my current game
.
When you take both planets and the one in between, you will have an easier time defending those planets compared to 2 single planets far away from each other. Than comes the part of logistics, including that once you have 1 planet you can often easilly also get the other as at that point it no longer is across the uni but only 1-2 wormholes away.
I'm actually really starting to like that about the map-generator and game itself, when you think you see a patern, it changes