It just struck me that the dark matter mystery could have a simple AND a visible solution. All we need to do is trust Al.

Suppose a mathematician calculated all the angular momentum speeds of each spinning body in a galaxy and added the orbital velocity speeds of every object in a galaxy and added that to the mass of of the entire galaxy rotating and the speed of the entire galaxy moving relative to its neighbors in a super group and the expansion rate of the universe and finally add all the non luminous rocks, mini black holes, mega black holes and gas ...

As we know the faster something moves the more mass it has and the slower time goes. Add all the mass added by all the various speeds and the dragging gravitational vortex* that drags along with it and YOU MIGHT BE ABLE TO ADD A HELLUVA LOT OF MISSING MASS to the visible galaxy. I doubt if speed generated mass would be enough to account for why galaxies rotate in unison but at least we have the means to prove or disprove this off the cuff hypothesis. But maybe it can account for the missing mass.   We need to do tedious work on a galactic scale to really know for sure.

Simple Einstein geometry solutions work well on the mega scale but the tiny is anti intuitive in comparison to the large. Could it be we have forgotten to add the motion of spin and orbit and all relative speed and expansion, which all increase mass, to the measuring of the weight of the universe??? Sounds like a typical human mistake to me.
It would be fun to prove a simple solution but I kinda prefer the sci fi whimsical notion of invisible mysterious mass.

*a predicted Einstein vortex effect only conclusively proven via a 20 year NASA experiment last year.


Einstein was so correct that when he thought he made a mistake since his equation called for our universe to be expanding so he fudged it out with a made up cosmological constant. Turned out his mistake was that his equation was right from the get go. He was brilliant even in his mistakes.