Just a dead-simple question: are homing weapons viable?
The question is pretty much in the topic description. I want to create a weapon for bombarding a planet, but not in a conventional sense. Rather, this "weapon" will actually be colonization pods/ships, and when they "bombard" the planet, it goes from living to dead, but the two states are reversed so that an uninhabited planet is changed to an inhabited one. The key detail is that I want the ships to always have a 100% success rate of landing on the planet, so in an ideal world, I would create them like homing missiles shaped like ships, with a low speed and excellent turning capability, just to ensure they all strike the surface and add up to the proper amount of "damage" necessary to change the living/dead status of the planet.
So, in short, can homing projectiles be anti-planet weapons?