I'm doing a phd in chemistry <a href=" http://www.gb2gm.org/marconi-centre ">neurontin 800 mg capsules</a> The biggest factor involved with asteroid deflection is detection. “The impact of a space probe would change the speed of the asteroid by just a few centimeters per second. But that’s enough to deflect its course to a significant degree over a longer period. So if we want to stop an asteroid on collision course with the Earth from hitting us, we’ll need to fire at it many years ahead of time,” said SchÀfer. While the idea of lasers being used to deflect asteroids could become a reality, it may be more practical to use a large space probe to avoid any doomsday scenario.