2. Why is mass conserved?

            The universe is made up of one, and only one, type particle. The particles are all alike and have the same mass. Furthermore, the particles are indestructible, they are immutable, they neither appear from nowhere nor do they vanish into nothing. In a given volume of space defined by a closed surface if the number of basic particles enclosed is determined at one time then the number of particles enclosed by the surface at a later time is equal to the initial number less the number leaving the volume plus the number entering the volume during the elapsed time.

            A particle moves and has an energy value equal to the magnitude of its mass times the square of its speed. In contemporary physics when something is translating at the speed of light most physicists consider that it is not mass but only energy with magnitude E and with momentum of magnitude E/c, where “c” is the speed of light. When this energy couples with a matter particle to accelerate it part of the energy is scattered and part is captured. The captured part increases the mass of the matter particle. Thus, contemporary physics considers that the sum of the mass of matter times  plus energy is conserved. In the kinetic particle theory everything observed moves at the speed of light including the matter particles which we observe at rest. A particle at rest is made up of mass moving in a circular path at the speed of light. Its mass is , its energy is . When it is accelerated, mass is added (of course at the speed of light) and the mass when moving is where  is the velocity of translation of the matter particle.