Yeah, i wish Dan will do and the bumps will make the planet realistic too with an atmosphere and it should be a separated texture and rotate in opposite direction:
Planet Texture + Texture Bump = Clockwise
Planet Atmosphere Texture = Counter-Clockwise
So we will need at least 3 textures to make a planet like earth and 2 textures for planets that isn't habitable or not suitable for life but it still depends on the user's heart content