[Reeses]

The later the calculated impact time, the less energy needed to deflect an asteroid out of Earth’s path. The energy can be so tiny it could be delivered by a particle beam from a solar powered satellite.

[CharlesWayneCT]

Yes. But would you want to be the project manager in THIS conversation? "Well,yes, see, we made a minor miscalculation, and apparently instead of pushing it away from the earth, we managed to push it INTO the earth".

To which the response, as delivered in the movie "Hunt For Red October", would be: "You arrogant ass! You've killed us!"