Sun, Moon, Stars, Milky Way
Distributed under Attribution 4.0 International license:
You may use, adapt, and share these textures for any purpose, even commercially.
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 Cossini spacecrafts, and of course, the Hubble Space Telescope.
Some parts of the planets remain to be mapped. These "gaps" are filled with fictional terrain that corresponds with the rest of the landscape.
The colors are slightly more saturated in to to highlite a unique natura for each object.
Earth textures are the most precise part of the pack. They are a result of merging and adjusting large amount of geo-data, space photos and images from NASA's Blue Marble (which might well be the 2nd best collection of Earth's textures available, so check it out)