Evidence from galaxies rotation rate curves suggests that there is more matter in a galaxy than that which is visible needed to hold the faster moving outer stars together. In galaxies clusters the visible stars and gas account for only 5% of the total mass. Dynamics of superclusters demonstrate all the energy changes of constituent galaxy groups. To comprehend what is happening we need to take into account all the energies interchanges of the whole universe and recognise that the dynamics of individual galaxies are functions of large scale overall energy changes.
