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For the past forty years the search for dark matter has been one of theprimary foci of astrophysics, although there has yet to be any direct evidencefor its existence (Porter et al. 2011). Indirect evidence for the existence ofdark matter is largely rooted in the rotational speeds of stars within theirhost galaxies, where, instead of having a ~ r^1/2 radial dependence, starsappear to have orbital speeds independent of their distance from the galacticcenter, which led to proposed existence of dark matter (Porter et al. 2011;Peebles 1993). We propose an alternate explanation for the observed stellarmotions within galaxies, combining the standard treatment of a fluid-likespacetime with the possibility of a "bulk flow" of mass through the Universe.The differential "flow" of spacetime could generate vorticies capable ofproviding the "perceived" rotational speeds in excess of those predicted byNewtonian mechanics. Although a more detailed analysis of our theory isforthcoming, we find a crude "order of magnitude" calculation can explain thisphenomena. We also find that this can be used to explain the graviationallensing observed around globular clusters like "Bullet Cluster".

Can Effects of Dark Matter be Explained by the Turbulent Flow of Spacetime?