This products contains:

High resolution (2048*1024) Earth textures - day map, night map, clouds, normal map, specular map
Textures in this pack are based on NASA elevation and imagery data. Colors and shades of the textures are tuned according to true-color photos made by Messenger, Viking and Cassini spacecrafts, and, of course, the Hubble Space Telescope.

Notes:

If you want to download for free, just put 0 in the "Name a fair price" box. If you want to support our work, please put the suggested amount there. This would mean us a lot, and also enable us to search for more free resources.
If you need the complete 2k Solar System 3D model, you can purchase it here -> Photorealistic Solar System 3D Model 2k Textures

Distributed under Attribution 4.0 International license: You may use, adapt, and share these textures for any purpose, even commercially.
Original source: https://www.solarsystemscope.com/textures/