What happens when your homeplanet runs out of citys?
I don't wanna know! D: It probably ends the game and makes you start over from your last save, or restart the space age.
Good news! I'm pushing back the bastards! My ship's health is at 4000 and I've got two members in my fleet. I've got 3 allies (sadly, only one of them is close enough to help launch a full on attack on the enemy's home planet) and I've got trade routes in most planets.
Also, the enemy took away my freshly colonized and terraformed planet! D: