Just so you know that the German schoolkid actually ended up being wrong about the calculations. Source: http://uk.news.yahoo.com/afp/20080417/tod-space-astronomy-germany-us-offbeat-f62056d.html
He just pointed out the consideration of the asteroid hitting one of earths 40,000 satilites, if it hit one of them it could change it's direction and hit earth.
Google probably is making call to him and join the company with big salaries, apartment, bank accounts. just a thought.
For those who are saying how smart the kid is, you do realise you look dumb when the 3rd post in this thread gave a link to an updated story that shows the kid was wrong. As an aside, the people who post the kid is a genius after this post are morons.