The Big Bang theory basically states that the universe is expanding and that there is point that there could be a critical density at which the universe could go on expanding forever or crunch. The theory of a rotating universe can also have a critical density is different for rotating universe. To contrast with the big bang theory, a rotating universe would have an equilibrium density. In fact, the particular rotating universe that this theory deals with is that our universe may be in equilibrium with neither contraction or expansion but with kinetic and potential energy. In Sphere Theory of the Universe, the universe is rotating. This rotating universe has mass where parts of it are moving at familiar velocities and some are moving at relativistic velocities. Size itself is confused, in that nothing really travels in a straight line, and therefore we are trying to weed out these problems in calculating the size of the universe. It appears that light itself travels in a spiral, which is controlled by gravitational forces. The observed quantities of particles are further complicated in that the relativistic velocities make the quantities of particles look higher. The concentrations of particles are highest at the center of the sphere, but the rotation imparts energy that makes things look like the concentration is mostly uniform. This paper tries to sort out these problems and present a Mass, Size, and Equilibrium Density of the Universe. The mass of the universe, which would include matter, dark matter, and dark energy. There is still some work to figure exactly what is going on the potential and kinetic energy. The equilibrium appears to be about 8.01*10^-25 kilograms per meter cubed. The spinning universe iuch denser than an expanding universe. The radius of the spinning universe is much smaller than an expanding universe at 3.1 billion light years, but light gets bent as it travels out to the edge of the universe.