1. Any object M with mass has a gravitational field, and the gravitational field moves with M. 2. The energy of M is transmitted outward in the form of longitudinal waves in the gravitational field. 3. Newtonian gravitation refers to the force produced by the object subjected to the longitudinal wave of the gravitational field. 4. The speed of the longitudinal wave in the gravitational field is much greater than the speed of light, but it must be limited. 5. There is a chasing effect between the object and the longitudinal wave of the gravitational field, which will cause the mechanical energy of the planet's orbit to increase slowly, thus making the planet's orbit slowly accelerate and expand. 6. If there is a relative velocity between M and the gravitational field from MX, then M will disturb the gravitational field of MX, so that a gravitational wave will be generated around M, which is the transverse wave of the gravitational field of MX, and it will be superimposed on the gravitational field of MX movement velocity. 7. The speed of gravitational waves is equal to the speed of light, and there is a Doppler effect between M and the surrounding gravitational waves, so that the gravitational wave density around M is no longer uniform, showing anisotropy. 8. The gravitational wave also has a force effect on the object, but the gravitational wave will not change the planetary mechanical energy conservation, but the anisotropy of the gravitational wave will cause the precession of the planetary orbit. 9. The universal gravitation under the joint action of gravitational field longitudinal wave and gravitational wave is complete, we call it dynamic universal gravitation.