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Hi Ron;
Its kind of like they're just drifting in any number of directions .. uninfluenced by anything … kind of random. Which is a bit hard to believe, given that there must be some kind of predictable gravitational (& other) influences going on - at least amongst some of them.
But if this is the case, what keeps the cluster together ? I guess this question is along the same lines as what keeps the arms in a spiral galaxy together ?
Given that the pattern is clearly different, I guess all they can say at the moment, is that the influences are different but the physics must be the same … which might then provide some clues.
Terrific mystery. I look forward to their explanations.
Cheers
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