Planet surface maps: Mercury, Venus atmosphere, Mars, Jupiter, Saturn, Uranus, Neptune, Sun.
Original creator: Solar System Scope / INOVE.
Source: https://www.solarsystemscope.com/textures/
License: Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/
Downloaded unmodified from the documented source mirror:
https://github.com/TanvirAhmedArnab/SolarSystem/tree/main/SourceAssets/ThirdParty/Textures/SolarSystemScope
Provenance: https://github.com/TanvirAhmedArnab/SolarSystem/blob/main/Docs/Legal/ThirdPartyAssets.md
Mercury SHA256 verified: 5A5C80607F643496BAC9A631E71957DEF35ED788895F18B678AC849C2B38E48A
Image pixels not modified. Runtime lighting and atmospheric treatment are artistic.

Earth: Three.js examples earth_day_4096.jpg. Runtime derivative /earth-day-2048.jpg resized to 2048 x 1024 and JPEG encoded at quality 88. The original remains available.