So I built the construction terminal and if I understood correctly, the next step is to build a science terminal, for which I require Spadonium. It doesn't exist on any planet in my base's system, and I can't build a beacon since I need the Science Terminal to get the required Voltaic cell.
So my question is, having not placed a beacon, may I leave the system to find a Barren Biome and then return to this system? Or is there a risk of losing my system? Is the system where I built my base remembered for me?