webolife wrote:I do think that the "excess gravity" issue leading to the "dark matter" misconcept may very well be related to the fundamental nature of time. But I'm not smart enough to figure out how to explain it to myself, let alone anyone else.
"Excess gravity" and "dark matter" are misunderstandings of the processes involved. I don't think it has to do with the nature of time, though, just gravity, electricity and magnetism (perhaps minus the gravity
See Los Alamos researcher Peratt's work. In his work there does not appear to be an "issue" with galaxy rotation curves. Using a plasma / electric model rather than a gravitational model, the rotation curves derived through PIC simulation match ACTUAL observations of rotation curves... No need for "excess gravity" or "dark matter." Just an understanding that galaxies form along Birkeland currents and their rotational curves / structure can be matched by an electricity-in-plasma model.
(Evolution of the Plasma Universe: I. Double Radio Galaxies, Quasars, and Extragalactic Jets)
http://public.lanl.gov/alp/plasma/downl ... 6TPS-I.pdf
(Evolution of the Plasma Universe: II. The Formation of Systems of Galaxies)
http://public.lanl.gov/alp/plasma/downl ... TPS-II.pdf
See part II, section V.B (5.B) on "Rotation Characteristics of Spiral Galaxies."
I don't have time to transcribe it, at the moment. Suffice it to say that the PIC simulation appears to match actual galaxy rotation curves.
These day show 1) a nearly linear solid-body rotation for the galaxy center (the first few arcminutes from center) 2) a nearly radially independent velocity profile in the spiral arms; and 3) distinct structure in the spiral arms that appears on the so-called flat portion of the velocity curve (beyond the first few arcminutes or, equivalently, the first few kiloparsecs).
The simulation data illustrate that 1) the plasma core rotates very nearly as a solid body, and 2) the spirals arms grow in length as they trail out along the magnetic isobars. Concomitant with a lengthening of the arms is a thinning of the arms. Because of this, and the axial current conducted through the thin plasma arms, a dicotron instability is produced.
The difficulties encountered in explaining the dynamics of elliptical and spiral galaxies in the absence of magnetic fields and plasma physics are well known ,  ... In a universe of plasma, Birkeland current sheets (ie, the flow of charged particles along magnetic field lines) can occur wherever a circuit and potential source exist.
[more exegesis snipped for brevity]
Whereas, the gravity-only paradigm cannot match galaxy rotation curves and must invent "excess gravity" or "dark matter" to account for the failure.
It comes down to a pretty simple argument, in the end, if Peratt's PIC simulations are accurate and that electricity in plasma plays a dominant role in shaping galaxies, etc.
One would assume they should be, coming from Los Alamos supercomputers designed specifically to deal with these kinds of things. Time and further data will be the arbiter of all, I suppose.