How about the concept that it is not gravity that holds the galaxies together at all, but rather electromagnetic forces on a macro scale.  Electromagnetic forces are much, much stronger than gravitational forces.  Either that, or there is something else entirely that is holding the galaxies together that we simply have not discovered yet.,(reply>), @Ian P The aether is the force carrier.  My knowledge comes from Oersted, Faraday, Maxwell, Heaviside, and Steinmetz.  You know, the people directly responsible for the creation of the electric grid.,(reply>), As if you even know what electromagnetism is?<br>Please enlighten us! What is the force carrier?<br><br>If you're with the electric universe ilk, sadly you've been scammed!<br><br>Cheers 😽,(reply>), @Bas Van vliet How do you know that it isn't electromagnetic on a macro scale?  Are you aware of the celestial filaments?  They are huge structures that connect the various galaxies of the universe.,(reply>), It's certainly not the first man, so I go for the latter