A model of that etherspace is proposed consisting of electrons and positrons, the etherons, without friction among them, which, as a whole form a discrete and elastic medium: the quantum etherspace.
The material particles are inclusions that deform the etherspace and thus generating the corresponding elastic energy, equivalent to their mass, in accordance with Einstein's theorem of inertia of energy (E=mc2). If the particle is at motion, the elastic deformation energy generated by it in the etherspace will increase. That increase is the kinetic energy. It is assumed that the time spent by light to travel through an etheron is a time quantum; a constant independent from its state of deformation. Thus, the absolute time of Galileo's transformation is revalidated, which is completed with an equation of transformation of velocities of light.
A gravitational attraction equation between two bodies is deduced, which differs from Newton's Law and from which it is concluded that the etherspace model proposed generates all the gravity observed without requiring the hypothetic dark matter.
