Amazing how our scientists have managed to hit non moving targets in space using those flawed sun at the center theories isn't it?
Relative motion. What the scientists believe to be the true reality is not important. As long as the calculations are done right, they will hit the target. Both models heliocentric, geocentric) properly done will give the right answer.
This is explained in the book.
Many of those targets (near earth) were hit using trajectories calculated from geocentric reference frames.
Mark
Darned right! Newton, Einstein... Bone Heads!