Next time you find yourself working with astronomical scenes, trying to model and texturemap planets, asteroids, satellites, or anything else up in the blackness of space, stop by Celestia Motherlode first where they have a huge collection of textures and models for the Celestia software.
The Celestia Motherlode is a repository for various addons like textures, models or celestial objects for Celestia. Celestia is a free, interactive (real-time), 3D astronomy program. It doesn't just show you the sky as it can be seen from earth as most planetarium software does, but allows you to move to and view the universe from any point between the planets and the stars. The Celestia Motherlode hosts over 10 GB of Celestia addons by various creators, which extend or change the way Celestia renders the universe.
While they say it’s for Celestia, the texture are in simple PNG format and many of the models are available in formats like 3DS or XYZ.
