I have a scenario up that says to explore 3 unknown systems in a star cluster, I have tried a couple of systems, but the scenario does not kick in. Does anyone know specifically which star cluster they are referring to?
Take that mission, and take another mission called 'Explore Delta Volanis' (for example. Could be any of the exploration clusters/nebulas/etc. Delta Volanis is the lowest level exploration cluster, and is just next to the Sol system in sector space). Then go and explore the 'Unknown Systems' in Delta Volanis (or wherever your mission tells you to go), and you will complete both.