IZDE / Variant 03 — Earth assets and renderer
Acquired 2026-10-24. All runtime assets are local; no third-party hotlink is required.

THREE.JS
Version: 0.180.0 (r180), pinned.
Official npm archive: https://registry.npmjs.org/three/-/three-0.180.0.tgz
Official project: https://github.com/mrdoob/three.js/tree/r180
License: MIT. Full copyright and permission notice is retained at
../vendor/THREE-LICENSE.txt.
Runtime entry: ../vendor/three.module.min.js
Its sole local module dependency: ../vendor/three.core.min.js

EARTH TEXTURES DISTRIBUTED WITH THREE.JS r180
The following files are unchanged copies from the official project examples.
Project license: https://github.com/mrdoob/three.js/blob/r180/LICENSE
Official example: https://github.com/mrdoob/three.js/blob/r180/examples/misc_controls_fly.html

earth-day.jpg
Source: https://raw.githubusercontent.com/mrdoob/three.js/r180/examples/textures/planets/earth_atmos_2048.jpg
2048 x 1024, JPEG RGB, 512606 bytes. Earth surface color; use sRGB decoding.

earth-night.png
Source: https://raw.githubusercontent.com/mrdoob/three.js/r180/examples/textures/planets/earth_lights_2048.png
2048 x 1024, PNG RGB, 734910 bytes. City light color; use sRGB decoding.

earth-clouds.png
Source: https://raw.githubusercontent.com/mrdoob/three.js/r180/examples/textures/planets/earth_clouds_1024.png
1024 x 512, indexed PNG with 256 alpha levels, 260222 bytes.
Use its actual alpha channel; suitable for a lightweight transparent cloud shell.

earth-specular.jpg
Source: https://raw.githubusercontent.com/mrdoob/three.js/r180/examples/textures/planets/earth_specular_2048.jpg
2048 x 1024, JPEG RGB, 223421 bytes. Specular data: bright ocean, dark land.
Treat as linear data, not sRGB color.

NASA CLOUD COMPOSITE (HIGHER RESOLUTION ALTERNATIVE)
earth-clouds-2048.jpg
Source: https://eoimages.gsfc.nasa.gov/images/imagerecords/57000/57747/cloud_combined_2048.jpg
2048 x 1024, JPEG RGB without alpha, 829367 bytes. Unchanged source image.
Use brightness as the cloud opacity mask; white clouds, black clear areas.
Source record: NASA Visible Earth, Blue Marble: Clouds, published 2002-02-11.
https://visibleearth.nasa.gov/images/57747/blue-marble-clouds/77558l
(The old Visible Earth record now redirects to NASA Earth Observatory.)
Credit: NASA Goddard Space Flight Center; Reto Stockli; Robert Simmon.
NASA media usage guidelines:
https://www.nasa.gov/nasa-brand-center/images-and-media/
NASA imagery is used as geographic information. No NASA endorsement is implied.

ORIENTATION AND LIMITATIONS
All textures use a 2:1 equirectangular layout: north at the top, south at the
bottom; west to east from left to right; Greenwich at the horizontal center;
the 180-degree meridian at the left/right seam. This is the ordinary Three.js
SphereGeometry/TextureLoader convention (default texture flipY=true).
These surface, light and cloud maps are historical composites. They do not
represent live satellite observations or current cloud/weather conditions.
The renderer may calculate the day/night boundary from the current UTC time;
that calculation does not make the texture maps live imagery.

Checksums, exact source URLs and byte sizes are retained in download-manifest.json.