I did create a segment node and played around with shapes, rotation, its speed and colour. It is as well changing directions.
This is about one rotating sphere that spins around a fixed sphere. The bigger sphere has the texture of the sun and the small one shows a historical map of the earth (file texture, jpeg). The earth is rotating itself while going around the sun, as it does so the light source (white arrow) spins as well to demonstrate the course of day and night on the earth. Movement is created by LFOs (animation).