It is shown that if all stars and planets were made out of the same material substance, such as water, for example, then their density of matter, which is conventionally defined as the ratio of their actual mass to an equivalent mass of water, must be taken into account also in the usual radial Newtonian law of gravitation. The idea of equalized mass supports the concept of quantity of matter involving density of matter as well as the bulk/mass that Newton envisaged. It has been proved necessary to explain formerly unexplained experimental results, including discrepancies between predictions based on general theory of relativity (GTR) and actually recorded data. The equalized mass is not meant to turn us back and embrace post-Newtonian theories of gravitation, but to complement the (radial-only by design) GTR for the phenomena that are only partly radial and partly nonradial. A certain new pull-and-twist equation of orbital gravitational interactions is proposed.
International Letters of Chemistry, Physics and Astronomy (Volume 54)
J. Czajko "With Equalized Mass, its Density of Matter can Affect Radial Gravitational Interactions TOO", International Letters of Chemistry, Physics and Astronomy, Vol. 54, pp. 112-121, 2015