1) Space is not empty. It is filled with matter that is much less dense than atomic matter (for naming purposes we will call it dark matter). Space does not want to be empty. This gives dark matter an elastic effect. Dark matter is thicker and thinner but it is not quantitative (meaning that it is not made up of individual pieces).
2) Gravity is caused by the expansion of dark matter. Think of it this way; you have a container filled with gas. If you shrink that container everything in it repels each other. The more you shrink it, the more they repel each other. Visa versa. If you expand the container they will attract each other. The more the container is expanded the more they will attract each other. This means that gravity is simply caused by negative pressure in a realm where actual empty space doesn’t want to be empty.
3) All atomic matter is made of dark matter. Its configuration of densities determines what it is. This has to be so because atomic matter came into existence. Matter is neither gained nor lost. It had to come from somewhere. The only explanation is that the mass was already there and is still there.
4) After the big bang dark matter was not expanded sufficiently enough for atomic matter to hold itself together. As dark matter expanded, the strength of gravity increased. At a curtain point gravity became strong enough for atomic mass to come into existence. As the strength increased stars and galaxies started forming. This process will continue until all atomic matter will coalesce into one point. When this happens the breaking point of the universe will break and all the matter will be dispersed in one gigantic explosion; the big bang. If everything in our container that is expanding repels each other it will cause dark matter to shrink. This process will repeat itself infinitely because energy is neither gained nor lost. This means that it is actually true perpetual motion. It will continue forever.
5) You have two marbles. One marble bounces off of the other marble. The exchange in kinetic energy is calculated by the amount of mass marble A has in relation to marble B and the velocity marble A has when it hits marble B. If marble A had no mass marble B would not move because there would be no exchange in energy. Marble A would have no energy. In photovoltaic’s photons bounce electrons out of their orbit to jump across the bang gap. If photons had no mass, than they would have no influence on electrons when they collided. The main reason photons were thought to have no mass is because you can make an infinite amount of photons without loosing any atomic mass from the atoms they came from. This can’t be true because if they had no mass they would not have any influence on atoms. So the only other explanation is that when electrons go from an excited state to a less excited state they are actually crushing dark matter into photons.