Realistic Earth and Moon 3d models with 16k textures from NASA in JPEG format the textures and the textures are free just download them in the example files so your pretty much buying my time setting up the 3d models anyways enjoy :)
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A animated sun I made with cinema 4d the files include the cinema 4d formats .C4D and .XML
I made buy animating the noise in materials and then adding volumetric lighting
you can downlaod the example files for a video of the rendered sun animation scenes and the 8k sun texture for Free! hope you enjoy :)
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the only thing I didn't made is the earth, moon and sun Textures so im not sure its royalty free but its from the NASA website and the textures are free to download so your pretty much paying me setting up the 3d models, other then that you could use it for ever you want commercial, you tube or whatever lol you buy it its yours :)