>>11877418An inertia rocket. But this is just because i dont understand much of the more crazy physics. Maybe there are more efficient ways.
Basically you install a rocket with an steel-core in space, and an ion-drive. Then you speed the missile up to a fraction of the speed of light, like 20% of sth. and crush it into earths crust. Because you can reach so much higher velocity as an comet, it is also exponential more destructive.
