Newton's law of universal gravitation is placed into a new context; specifically, a rotating gravitational field is analyzed, and a hypothesis of an "attractive force in a rotating gravitational field" is proposed. It is argued that a fundamental difference exists between a rotating and a non-rotating gravitational field. A "boundary radius" Rc is introduced, which is coupled to the speed of light via the relation Rc= c/ω. It is assumed that gravity within our galaxy comprises two distinct gravitational fields: the field generated by the mass of the rotating supermassive black hole at the galactic center (SgrA*), and the field produced by the mass of the stars and other baryonic matter within the galaxy. Utilizing this hypothesis, the galactic rotation curve of the Milky Way is successfully described without the need for the dark matter hypothesis.
Robert Cahun (Mon,) studied this question.