On the gravity dynamics of objects in space and time

Existing theories of gravity encompass Newton's law of universal gravitation and Einstein's general relativity; however, they fail to fully elucidate the nature of gravity and the mechanisms by which it influences the motion of objects. This article presents a new gravitational theory model proposed by the author, introducing the concept of gravitational line flux. By employing mathematical methods such as Gauss's theorem and Stokes's theorem, the study investigates how variations in gravitational flux through a closed spatial surface affect the motion of objects. The following laws are proposed: (1) The gravitational flux through a closed surface is directly proportional to the mass m of the enclosed celestial body. (2) Changes in gravitational flux through a semiclosed surface in the direction of an object's motion alter the object's motion state in space, while concurrently, the object's motion induces variations in the gravitational flux through the surface. (3) The time variation increment of gravitational flux through a semiclosed surface in the direction of the object's motion is proportional to the object's acceleration. Furthermore, the motion equations of gravitational fields for celestial bodies or matter in local inertial and noninertial frames are derived.