Moon Orbits the Earth while the earth rotates. Earth tilted 22.5 degrees the solar disc.Moon maintains one face to the Earth (i.e. It rotates at the same speed on its axis as does to achieve one orbit).
Textures and bump maps for Earth and Moon.
Video of Method
This has been an interesting task and I have enjoyed. As it is true modelling it has to conform to reality.
What I didn’t do was load the bump map correctly. So my next version will look better. Unfortunately the Earth and the Moon are moving in the wrong direction!