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All Disk Galaxies Rotate Once Every Billion Years (astronomy.com)
According to a new study published in The Monthly Notices of the Royal Astronomical Society, astronomers discovered that all disk galaxies rotate about once every billion years, no matter their size or mass. Astronomy Magazine reports: To carry out the study, the researchers measured the radial velocities of neutral hydrogen in the outer disks of a plethora of galaxies -- ranging from small dwarf irregulars to massive spirals. These galaxies differed in both size and rotational velocity by up to a factor of 30. With these radial velocity measurements, the researchers were able to calculate the rotational period of their sample galaxies, which led them to conclude that the outer rims of all disk galaxies take roughly a billion years to complete one rotation. However, the researchers note that further research is required to confirm the clock-like spin rate is a universal trait of disk galaxies and not just a result of selection bias. Based on theoretical models, the researchers also expected to find only sparse populations of young stars and interstellar gas on the outskirts of these galaxies. But instead, they discovered a significant population of much older stars mingling with the young stars and gas.
TFS oversimplifies things a bit. The finding is that the outer edge of these galaxies rotates at about the same rate for all of them. That's not entirely surprising: the more massive the galaxy, the faster the rotation at any given distance, but also the more distant the outer rim. It also implies a similar ration of dark matter to familiar matter across these galaxies - which again isn't shocking, but is interesting if the ration has to be very similar. If it's confirmed they really do line up this closely that's probably big news for those modelling galaxy formation.
Socialism: a lie told by totalitarians and believed by fools.
Your speculation fails the sniff test.
The electromagnetic force affects a very, very short distance.
If galaxies are "communicating," with each other and are similar to synchronized swimmers, it's going to be via gravity (including the little-understood dark matter) or perhaps entanglement on a quantum level.
There's a lot we don't know, and the substance of this article is on that list.
This is a preliminary finding and serves as a clue, only.
This recent revelation, if verified, could lead us to a solution for the asymmetry between matter and anti-matter.
It little behooves the best of us to comment on the rest of us.
You're applying the wrong toolbox - electrostatics. The macroscopic behavior of charged particles is defined by the domain of plasma physics, not electrostatics. You can observe this simple fact by observing any novelty plasma globe: Plasmas form into filaments within the laboratory, and these filaments conduct electric currents. The filaments tend to wrap around one another without combining, demonstrating both a long-range attraction and a short-range repulsion. What this means, in practice, is that the electric force can be extended to any distance. Wherever the plasma filament goes, it carries with it the electric force.
"Several researchers have reported direct evidence for large scale electric currents along astrophysical jets," and not only that, but in plasma physics, it's not always the case that the plasma emits any light. Plasmas can conduct even while they are in a dark mode - much like the wires in your home, of course.