I know this is a waste, but I will try anyway. All those “UFOs” are nothing more than bits of particulate matter left behind by the shuttle processing crews. They never get everything when the do a final cleaning. At zero g they start floating around and when they open the payload bay doors the gentle breeze of what is left of any atmosphere in the bay tends to push them out, and they becomes visible to the cameras. They are nearby objects and not distant UFOs. They sometimes abruptly change direction when the gasses from a shuttle control jet is fired, giving them a firm push. Why does every little object have to be interpreted as a UFO, when the simple answer is… IT’S JUST GARBAGE!!!