You have to find a slot that is empty (has no picture of a planet) and send a colony ship there with the colonize mission.
There should be a picture of a planet there with no name showing it's not colonized.
EDIT: Is this the normal size for being attacked in outerspace? Or is it random? Or is it based on your ranking? I'm thinking of makeing a bigger fleet for it but not if the pirates will just show up bigger and wipe that fleet.
Attacker Hueristic ([1:376:12]) Weapons: 30% Shields: 10% Armour: 30% TypeL.Fighter Total1 Weapons65 Shields11 Armour520 Defender Piraten ([1:376:16]) Weapons: 0% Shields: 0% Armour: 0% TypeL.Fighter Total5 Weapons50 Shields10 Armour400
Edited by Hueristic - 7/10/09 at 8:35am