` Apr 2005 (UTC) ::::::::::::::Think of it in terms of rulers. The ``rotating metric`` is another way of talking about rulers that are changing sizes. In a rotating universe, the ruler that is parallel to the direction of rotation is shrunk with respect to the ruler that is perpendicular. This causes an apparent shrinking of that axis. It has to do with the details of the rotating geometry not having a full 360 degrees in one time around the circle (due to the time dependence of the rotation).  22:10, 24`