[citation][nom]Cats_Paw[/nom]I got an idea, everyone post one idea to rock the asteroid of its course, lets see who comes out with a better idea. Here is mine:Launch into space some rockets that will not explode, but attach to the rock from one of the sides and then turn on to modify its Trajectory enought to avoid earth. As far as i know, in space the only forces to atract a comme is gravitation, so if for an asteroid to hit earth it must have a certain path, modifing it by just a bit (far enought thou) should send it far away enougth. Well we still have a 2012 comming, right? .[/citation]
You are forgetting about inertia. A rock the size of Earth has a lot of inertia and will take more than one of our tiny rockets to make a change in its path.