I unfortunately at this point don’t know enough physics and math to crunch the numbers myself. But I plan on reading up on this old conversation. Hopefully with my current, limited scope of education I can conceder and evaluate an alternate theory from whats currently commonly accepted without falling for fictional or pseudoscience.
Darkmatter was proposed when astrophysicists and astronomers found descripancies between how fast stars were moving with respect to the forces keeping them in orbit. There wasn’t enough mass – was the assumption – because the gravitaional force needed to hold stars in thier orbits at thier tangential velocities had to be more than the estimated masses acting on those stars. Darkmater an invisible, currently undetectable mass was proposed to fill in the blank. As I understand it. Given not entirely complete, but that’s the way I think of it.
What proponents of the electrodynamic solution say is that the powerful force of electromagnetism acts on the plasmas of interstellar space to draw starsystems into tighter orbits without the need of any additional mass.
Is it possible? That’s the question on my mind recently.