The most cited evidence for (non-baryonic) dark matter has been an apparent lack of visible mass to gravitationally support the observed orbital velocity of matter in rotating disk galaxies. yet measurement of the mass of celestial objects cannot be straightforward. requiring theories derived from the known physical laws along with some empirically established semi-quantitative relati... https://www.spidertattooz.com/NYX-Total-Control-Drop-Foundation-Brush-PROB22-p11165/