How works galaxies?

Galaxies are star clusters, which mostly revolve and apparently randomly distributed in space. There rotations seduced intuitive for comparison with planetary systems. In them planets turn around a central star. Just as it is now well established that galaxies also have a central star in the form of a black hole equipped with huge mass. From these appearances of galaxies there functions was equated with that of planetary systems.

Later measurements of stars in the arms of the galaxies shows, their orbital velocities do not comply with the laws that apply to planets. The peripheral velocities of the planets decrease with increasing radius. The velocities of the arms of galaxies with its stars are not so, they are moving to fast. So the arms of galaxies with its stars would fly away in radially. But they do not. So the research methodology to infer from known to unknown is at the end.

So it was apparently necessary to create something new, by the model for the discovery of Neptune. The neighbor planet Uranus performs significant fluctuations with its orbit, at that time inexplicably. Thus the idea arose, that it must be caused by a mass, which must also be located in this area. As a mass of course, another previously discovered planet was adopted. It was found, it was the Neptune.

Mathematics took the leading role in the study of nature. But with a factual view of the success by the discovery of the neptune it should be noted that it is only a quantitative expansion in the inner of a known event of the nature. A new physically thing was not discovered by math. Nevertheless mathematics is used since that day
for research to find new events of the nature. Meanwhile, however, the end of this method is achieved, research can no longer go forward. The cause: mathematics is not physics.

To solve the problem of the wrong movements of the galaxie arms was used the success by the variations of the circumferential orbit of Uranus, there must be something other, an unvisible mass. The "dark matter" was born. But it was not found hitherto despite extensive search.

A new unprejudiced look reveals that there is a serious difference between galaxies and planetary systems: planets do not form such tails how arms from galaxies. According to the laws of gravity, they may not even. So is the question: why galaxies have such tails? The only sensible answer: the stars in the galaxy arms would jointly belong to a something. Thus, this "something" must be found. But: with a totally new "something" would of course again the danger is present, that is is the same as the dark matter as an only fiction without reality. With "additional inventions" furthermore everything can be explained. Peoples have done this since the dawn, with gods. Today's "chief god" for the physics is the math. What is the difference? Neither gods nor math are the nature!

Does it give a real "something", to which the stars in the arms of galaxies can belong? Yes, it is the ether. It as the "mother of nature" must ultimately be able anyway to explain everything, otherwise it would not be the "mother of nature".
From what is gravity, it follows, that ether flows into the central mass of galaxies. The galaxy arms thus could be flows of ether like water flows as its inflow to the outflow hole. The ether flows with a magnitude like the size of the galaxy and take with all stars in it. Why stars are preferred in the arms of galaxies, remains unclear. Just as, why exists galaxies.