# Astronomy texture sources
Downloaded 2026-10-16; stored locally so laboratory operation has no external requests.

- `moon-lroc.jpg`: NASA Scientific Visualization Studio, CGI Moon Kit (2019), https://svs.gsfc.nasa.gov/4720/ ; source https://svs.gsfc.nasa.gov/vis/a000000/a004700/a004720/lroc_color_2k.jpg . Moon surface color from Lunar Reconnaissance Orbiter Camera (LROC), NASA/GSFC/Arizona State University. Visualization: Ernie Wright. Original JPEG, no modification.
- `earth-blue-marble.jpg`: NASA Visible Earth / Blue Marble, https://visibleearth.nasa.gov/collection/1484/blue-marble ; source https://eoimages.gsfc.nasa.gov/images/imagerecords/57000/57730/land_ocean_ice_2048.jpg . NASA Goddard Space Flight Center. Original JPEG, no modification.

NASA media guidance: https://www.nasa.gov/nasa-brand-center/images-and-media/ . These scientific texture assets are credited separately from application code; no NASA logos are used and no NASA endorsement is implied. Credit NASA and identified contributors when reusing these files. Check source guidance for any separately identified third-party restrictions. The rendered atmospheric rim/red totality are original teaching approximations, not NASA measurements.