In this paper we look at the connection between mass and space. We start with postulating that there is only space. Then we derive what mass stands for. It appears that what we call mass is equal to the surface area of a black hole. The unit kg transforms into m². We find equation R=c²/G describing the size of the universe. Constant G transforms into a ‘universal acceleration’ with units m/s². Rewriting the equation as G=c²/R tells us that the universe has an inherent ‘rotational’ aspect and therefore gives rise to a coriolis force. The latter force might be the reason for galaxies having spiral arms. We show that the universe has an associated time scale T=c/G and that its mass is defined by equation M=cu2074/G². Furthermore we show that the ‘planck length’ and Heisenberg’s uncertainty principle are connected to the size of the universe and we argue that energy is quantized with levels defined by equation E(n)=nhG/c where E(1)=hG/c is the zero-point energy. We show that the photon might have a defined volume. And finally we derive a value for the total amount of energy packets in the universe and show that the vacuum energy density is given by the equation P(E)=G.