I know that's why i have a fairly heavy deence fleet for antimissile work, 3 King. . . . whatevers, armed with gauss cannons, 4 missile destroyers, 2 cobra class particle beam destroyers, ne ship of another class i can't remember, lost one of my survey vessels to a missile buoy, or mines. . . . not really sure, all i know is that when i entered alpha centauri i found about 4 planets with 2. 00 coloniz costs and a buttload of wrecks ruins on two of the planets, one of my geo survey boats got too close to a planet and went poof, my Kings and cobras killed the missiles pretty quickly so all went well. My colonization has sucked though and i have another month or so until my colony ships are finished.