The Earth moves around the moon. Then the mass known as earth's is moon's in inverse square force scheme. The moon is very very dense. But in that scheme, the density of sun is nearly the same as that of water. In the inverse biquadrate scheme, sun is over 100,000 times dense. We have believed that sun light is from fusion. In the inverse biquadrate scheme, It can be suggested that hig pressure from high density push lights away from sun.