It's a soaring success even though it's earthbound.

即使是在地球上，这也是一个巨大的成。

Once the asteroids are spotted and their orbits determined, an earthbound asteroid can be nudged slightly off course with a satellite deflector or a high velocity projectile, or blown up with nuclear weapons, causing it to miss its deadly rendezvous.

一旦小行被观到并且确定其轨道, 卫器或高速射弹, 或动用核武器可以使目标地球的小行稍微离原有路线, 让这次致命的约会永远泡汤。