https://arxiv.org/abs/1106.1397
Universe's highest electric current found
https://www.newscientist.com/article/mg ... ent-found/
We already have strong observational evidence that powerful electric currents traverse almost unimaginable distances of spactime. We also have mathematical models that describe the physical formations observed in currents in plasma, specifically field aligned "Birkeland currents":
http://www.ptep-online.com/2015/PP-41-13.PDF
http://www.ptep-online.com/2018/PP-53-01.PDF
https://youtu.be/fllqgFicLO4
One of the most important and unique predictions of a Birkeland current galaxy rotation model is the prediction that electrical currents move plasma in different directions at different radii from the center of the galaxy. Some plasma current can be moving in one direction (clockwise), and other currents (further from the radii) moving in the opposite direction (counter clockwise), and it's fully capable of easily transporting a bi-directional flow of current.
What we should "predict" that we should find in a Birkeland current driven galaxy rotation model are instances of counter rotational movements in at least some galaxies. Likewise we would expect that at least some few galaxies wouldn't necessarily have much current flowing through each and every galaxy, in which case gravity alone should suffice to explain the rotation patterns of galaxies without strong external currents present. In both instance, both predictions have been observed.
Counter-Rotation in Disk Galaxies
https://arxiv.org/abs/1403.1263
We certainly do observe galaxies that display counter rotational elements in them as predicted by Birkeland currents. We also observe at least some galaxies which seem to be well explained by gravity alone.
Unusual Galaxies Defy Dark Matter Theory – W. M. Keck Observatory
http://keckobservatory.org/df2-df4/
Considering the far greater range of "predictions" made by a Birkeland current driven galaxy rotation model, compared to a dark matter model, the Birkeland current rotation model seems far more robust. It not only explains why some galaxies rotate faster in some instances, it also explains the existence of counter rotation rings in some galaxies as well.
We also have additional evidence of field aligned currents over a billion of light years long:
Why do galaxies align?
http://www.astronomy.com/magazine/news/ ... xies-align
From the planetary scale, to the galactic scale to the billion light year scale we see evidence of currents in space. The Birkeland current model of galaxy rotation is *far* better than the dark matter model at explaining various galaxy rotation patterns and in terms of explaining why galaxies are formed by and shaped by the filaments of spacetime.Everywhere we look, galaxies trace out the paths of these filaments. But it turns out galaxies don’t just illuminate the cosmic web — they’re also shaped by it.