The three types of galaxies, S, N and Q-galaxies, may be proof of a cosmic decreasing gravity. As and are functions decreasing in time it will be seen that decreases with time and increases with time. The theory is compatible with Mach's principle, uniting macro- and microcosmos. The theory also answers to 'the arrow of time', as time can only increase. This is fulfilled by the cosmic space quantum number and the cosmic time quantum number being integers, moving from 1 to higher and higher values.
Examples are centrifugal and Coriolis forces.
The problem can be illustrated as follows. Consider a ball rotating relatively to all other masses of the universe. Experience shows that the ball bulges at the equatorial regions. If the ball were at rest it would not bulge. On the contrary, Mach said that it is a relative effect which would also occur if the whole universe rotated and the ball were at rest.