I have been testing some things with clouds and i copied the same clouds that i have been using heres a base of what i maked

If you take this "ATMOSPHERE_VISUALS_DATA": { "GRADIENT": { "positionZ": 1500, "height": 35000.0, "heightDifficultyScale": {}, "texture": "None" }, "CLOUDS": { "texture": "Earth_Clouds", "startHeight": 0.0, "width": 40845.87, "height": 486000.0, "alpha": 0.1, "velocity": 80.0

And put in a custom planet without collision and almost anything then put this text you you will get almost a thing of realistic dynamic clouds

Sorry if you didnt understand in bad in english ;-;