Gravity's fluctuation derives from its speed—a constant to the absolute space presumed

According to the research work by the same author titled "1887 Michelson-Morley experiment: a new analysis with computer assistance" (https://doi.org/10.5281/zenodo.7016029), the M-M experiment should be concluded as delivering no result instead of reporting a null result. This means Newton's conception of absolute space may still be a valid proposal for the science of physics. With this recognition of the 1887 Michelson-Morley experiment, I combined Einstein's idea of finite speed gravity with Newton's conception of absolute space, by which the two meliorated gravity models were established. In these models, two gravitating objects alternately play their role as the source or the target mass of the working gravitational field, so that the doctrine of the field theory—“gravity effective only when its field reaches its target by traveling at finite speed” could be applied to each of the said models. Since there should be no reason for the true space (i.e., absolute space), making each gravitational field (from each instantaneous output of gravitational field) elongate longer or shorter in certain radial directions than the rest, it is logical that the radial speed of a gravitational field should be a constant to the absolute space. By having this supplementary assumption to the field theory of gravity, the fluctuation of gravity and the melioration of radar round-trip measurement were mathematically derived; the elliptical orbits of planets and the precession of planetary orbits were tentatively explained.Some wording expressions improved