The structure is within a far larger filament around 50 million light-years long, and containing over 280 galaxies. But the weird part is their rotation.

The structure is within a far larger filament around 50 million light-years long, and containing over 280 galaxies. But the weird part is their rotation.
East Africa may look very different in five to ten million years.
The answer, as usual, is somewhere in the middle.
That would be the dream.
The answer is right under your nose. Obviously.