Propagation of Newtonian gravitation derived by the elastic energy

The Earth is compressed by its own Newtonian gravitation. The pressure is generated inside the Earth for this compression. The pressure distribution is expressed using the Adams‐Williamson equation (AWE). The elastic energy is stored inside the Earth by the pressure. The Newtonian
 gravitation is derived by this energy. The propagation of Newtonian gravitation at the speed of light is expressed by using the AWE as a wave.