How do you get the space crats to stay on the right path?
It is pretty amazing how well the navigation team can calculate exactly where the spacecraft will be at every point in the mission. After launch, there were a few times where the team calculted the location of the craft and tweaked the direction with thrusters. When Odyssey entered orbit, it was less than 1 kilometer away from where they predicted, after travelling all the way across the solar system.