where this is a double astroid. we think of earth and the moon as a binary system. this is a big one and a little one and so we have they re orbital parameters and so if you go and deflect the moon by the tiniest amount, you can compare the future data with your data from the past and acrecurately measure what effect it had on the trajectory of the moon. just because i m worried about myself, is there any remote possibility that they re tracking right now about something that may, this may happen or is this just to know what you could do? it s a test. it s a test of can we change the orbit of an asastroid. we cross the street every time the same streets trucks are there. you don t get hit. why? because you re crossing at a time different. the three ways you can deflect