How the Edge of Our Galaxy Defies Known Physics

Donald Saari, a mathematician with expertise in mechanics, has argued that the rotation curve velocity discrepancies are essentially the result of astronomers using a continuous mass distribution of matter in a galaxy in their calculations. When you discard that approximation and work with the mechanics of stars locally attracting each other in various configurations, the case for dark matter (at least from the point of view of galactic rotation velocity curves) disappears.