> SpaceX’s automated system for avoiding satellite collisions has sparked controversy, raising concerns from other satellite operators who say they have no way of knowing which way the system will move a Starlink satellite in the event of a close approach.<p>For aircraft, we have TCAS RA, which tells each pilot in which direction they should move, with the knowledge that the other aircraft has been told to move in the opposite direction. It might be time to consider something like that for satellites.