An increase in the energy differential increases the space between various quantities of mass, whereas a decrease in the energy differential decreases the space between various quantities of mass.

In relation to two separate masses such as the earth and the moon…if the underlying energy of the moon is increasing at a greater rate than that of the earth the moon will move away from the earth, due to an increased energy differential existing between the earth and the moon.

Whether it’s atoms or large bodies of mass the spacing is determined on the basis of energy differentials.