I've visited 10 Atlas Interfaces, collecting the stones, and then visited an 11th where I can finish the Atlas path. However, I sold my first stone not realising that I needed to keep them, and so I didn't complete the mission. I've since travelled through a couple of black holes and quite a few warps, buying a 10th Atlas Stone on the way. I'm now at a loss as to how to find another Atlas Interface, as Nada and Polo no longer offer to show me one nearby.
Do I just have to keep travelling and hope I get lucky?