So I just sent a small moon into a planet, took 3 of them engine things. Not sure if they`re bugs but ill let you know anyway. The engines had no animation or effect, just a sound of a horn. When it got close enough to touch the planet, it just went through it, and the game crashed. But before crashing i noticed that all the A.I`s were annihilated. There was no collision or destruction tho.