1- Gravity is a fictitious force.
2- It does not depends on particles such as gravitons.
3- Gravity has no charge, so it is impossible to shield it.
These three statements led me to assume that gravity is a fictitious force that depends on the Law of the astral inertia.
The postulates of this law are:
1- Objects on the ground or near the surface of the earth, or any other star, follow the movement of this.
2- The astral inertia is responsible that some starts revolve around others.
Elvis Sibilia