Hello, Suppose, A and B spaceships are moving with constant acceleration. There is a string tied to spaceships center to center. A is on left of B and B is on right of A. C is outside observer. As speed increase, A sees that B going further ahead, and B sees A going further behind. So, from ships PoV, string would be broken. But, from C's PoV, distance between A and B remains constant. So, I cannot understand, how string would be broken from C's PoV? Thanks.