What happens if you run out of place for relics? (Stellaris)

The last DLC provided the opportunity to conduct archaeological excavation and relics to collect that give different bonuses, which certainly diversifies the gameplay (at least in the initial stages of the game), but for these relics is only 6 slots, and the relics of 20 pieces, that's the question, and if I find, say, 7 relic, what will happen?