Blog Editor's Note: Answers to some of your new questions are coming in...This question (which was partially addressed in the last audio clip) was posed by distinguished S&T grad Ted Weise:

How does NASA track "space debris," and if there is a potential encounter with the station or shuttle, what occurs?

MAGNUS: Actually the Air Force does. They have a large facility in Colorado that tracks all objects in orbit above a certain size. We have a group of people who interface with them to keep track of any potential trajectory intersections with the space station. Our mission control team has drawn an imaginary box (and I am sorry, I forget the size) around the station and if anything is projected to enter that box, serious work on orbital maneuvers takes place. The object is tracked for several days and there is a timeframe in which the decision has to be made to move the station or not.