DynaSoar writes "NASA astrophysicists have discovered what they claim is individual outside the observable universe exerting an effect on the observable. The matter is pulling clusters of galaxies towards a region of space known not to contain sufficient matter to create the effect. They can only speculate on what the matter is and how space might differ there: 'In these regions, space-time might be very different, and likely doesn't contain stars and galaxies (which only formed because of the particularity density pattern of mass in our bubble). It could include giant, massive structures much larger than all in our own observable universe. These structures are what researchers suspect are tugging on the galaxy clusters, causing the dark flow.'"

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Mark