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Yes, it could have to do with Ox/Ix(Outer x/Inner x), my concept that Brian Marsden thought might be useful. Think of a solar version of galactic globular clusters : spinning, open spheres or lenticular shapes(2 of them)on slightly different solar radii/orbits. Every 26 million years they pass thru each other, throwing out a few comets, thus being partially responsible for the dinosaur-killer asteroid of 65 million years ago. A possible method of detection : a coded lasar pulse sent out into the ecliptic in a precise wavelength so as to excite known surface molecules on sedna/cometary bodies; basically a cosmic flashlight technique. If you get back an echo of a FAST moving body(at the center of the swarm)...