[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]
The problem is most asteroids are tumbling in space, rotating on all 3 axes. Attaching something would relatively quickly wind it up and down to the surface. But, parking said rockets a few hundred feet above the surface with small thrusters to offset the gravitation (and not aimed at the surface) will allow the rocket to gravitationally attract the asteroid and move it off its current trajectory. Technical name is a Gravity Tractor.