How stop Colony ships from taking your mined planet!

[Blabsawaw22]

I have a Korabbian Spice planet with my mine on it and I see other Empires colony ships trying to settle it! (some Empires I have mutual defense pacts with so My ships don't attack them..)

when the colony ship arrives it just takes over the colony and I lose my mine and Korabbian spice!!

what to do??

I can't settle it myself cause I'm human and it's a planet I can't colonize yet..

[tppytel]

Unless you can get that planet within your empire's borders by planting a colony nearby, there's no way to prevent another empire from settling there.

[Aeson]

Technically, you could declare war on all your neighbors and build a military station at the planet. That'll prevent colony ships from landing, at least until the station gets destroyed by a fleet or runs out of fuel.

As far as productive suggestions go, tppytel's suggestion of finding a nearby world you can colonize and settling there to claim the system is a good one; if you have trouble finding a good colony location, remember that a low-quality colony can still claim an area, and while such a colony isn't great for your economy, just one or two are probably not going to tip your empire into an economic death spiral or anything like that, either (unless you were really, really close to that point anyways). Alternatively, you could find yourself a colony ship loaded with a species that can colonize desert planets; formerly-independent worlds are useful for that, or you might get lucky finding an appropriate 'abandoned' colony ship during exploration.

There are some other ways to acquire Korrabia as a colony. You could, for example, order some ships to capture a colony ship belonging to an empire with an appropriate population type, though if this is done without a declaration of war it will damage your empire's reputation and anger the injured empire. You could more straightforwardly keep some loaded troop transports handy and wait for someone to colonize the planet, then invade shortly after the world is colonized, though if this is done without a declaration of war it will damage your empire's reputation and anger the injured empire. Be warned that the computer is willing to wage undeclared wars, though it will usually issue a formal declaration of war eventually if relations remain bad; if you go the invasion or piracy routes, you may need to be ready to fight for your new colony whether or not you receive formal notice.

[SirHoraceHarkness]

Keep at least one military ship at the spice mine(the spice must flow!) preferably an escort or some other cheap expendable ship and when you notice a colony ship moving in have your escort attack it. Usually just initiating an attack will drive it off for virtually no diplomacy hit and if you do manage to damage or destroy it before it gets away all that usually happens is the offended empire will send in a few of its military ships to blow up your escort. You can be surprisingly aggressive towards other empires without them declaring war on you depending on how aggressive they are and how much they naturally hate or like you.