回望 · Overview 素材署名与许可

回望 · Overview 素材署名与许可
完整作者、来源、修改说明如下。NASA/ESA等机构未为本产品背书。

回望 · Overview — third-party visual assets

1. Earth material and textures
Source: https://github.com/keijiro/MoonAndEarth
Author: Keijiro Takahashi
Only the Earth folder is included. The Moon textures from this repository are not included.
The source README puts its scripts and shaders into the public domain and identifies its Earth imagery as NASA imagery.
The Earth shader graph was retargeted from Built-in Lit to URP Lit. Material values and Android texture import settings were adjusted for this prototype.
Source README is retained at Assets/ThirdParty/MoonAndEarth/SOURCE-README.md.

2. NASA Earth imagery
Source links: https://visibleearth.nasa.gov/ and https://science.nasa.gov/resource/blue-marble/
NASA imagery provided through the MoonAndEarth sample includes Earth surface, clouds, night lights and topography/bathymetry.
Earth imagery credit: NASA; see the original NASA image entries for the contributing visualization teams.
Usage guidelines: https://www.nasa.gov/nasa-brand-center/images-and-media/
This independent prototype is not endorsed by NASA.

3. NASA Deep Star Maps (2012)
Source: https://svs.gsfc.nasa.gov/3895/
Image: https://svs.gsfc.nasa.gov/vis/a000000/a003800/a003895/starmap_8k.jpg
Credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.
Visualization by Ernie Wright and Tom Bridgman. Based on Bright Star, Tycho-2 and UCAC3 star catalogs.
The constellation overlays are not used.

4. Noto Sans SC font
Unmodified font under SIL Open Font License 1.1.
License text: Assets/Overview/Resources/FONT-LICENSE.txt.

5. Moon color map (2025 edition)
Source: https://svs.gsfc.nasa.gov/4720/
Image: https://svs.gsfc.nasa.gov/vis/a000000/a004700/a004720/lroc_color_2k.jpg
Credit: NASA's Scientific Visualization Studio; Ernie Wright (USRA), Noah Petro (NASA/GSFC).
Based on the LROC WAC color mosaic, assembled from Lunar Reconnaissance Orbiter imagery.
The source file is unmodified. Unity compresses it for the Android build.

6. Solar System Scope textures
Credit: Solar System Scope / INOVE (https://www.solarsystemscope.com/textures/).
Image: https://www.solarsystemscope.com/textures/download/8k_mars.jpg
License: Creative Commons Attribution 4.0 International, https://creativecommons.org/licenses/by/4.0/.
The source file is unmodified. Unity limits it to 4096 pixels and uses ASTC compression on Android.
Solar System Scope states that the maps are based on NASA imagery, with adjusted colors and fictional terrain filling some gaps. They are visual assets, not scientific measurements.
Additional unmodified textures: Mercury, Venus atmosphere, Jupiter, Saturn, Saturn rings, Uranus, Neptune and Sun (2K editions from the same source). Their source URLs and checksums are recorded in AssetSources.json.
This credit is also displayed in the in-game menu. The license is saved as SSS-LICENSE.txt in Resources.

The previous synthesized ambient loop has been removed. Version 0.5 includes five music tracks supplied by the user from the 宇宙之歌背景音乐 folder, and the user-supplied 宇宙白噪音.wav as a separate looping ambience track. The original source audio files are imported unchanged. This is an immersive soundtrack, with no claim that the background is an acoustic recording in vacuum.

7. Astronomical position data
Planetary elements and rates: https://ssd.jpl.nasa.gov/planets/approx_pos.html (JPL Table 1, valid 1800-2050). The Horizons endpoint was unreachable from this host; the prototype uses the documented approximate Kepler formula instead, not high-precision Horizons results.
Moon positions, hourly distances and J2000 RA/Dec: NASA SVS, https://svs.gsfc.nasa.gov/5587/; https://svs.gsfc.nasa.gov/vis/a000000/a005500/a005587/mooninfo_2026.json. Credit NASA/Goddard Space Flight Center Scientific Visualization Studio.
The offline ephemeris is generated by Tools/generate-ephemeris.py. Numerical data is used to preserve relative body direction, distance and angular size. Earth/Moon barycenter is adjusted using the Moon position and Earth/Moon mass ratio.

8. Lunar relief and lunar observation site
Global imagery and elevation: NASA CGI Moon Kit, https://svs.gsfc.nasa.gov/4720/, 2019 LROC WAC 8K color map and LRO LOLA unsigned half-meter height map. Credit NASA SVS; Ernie Wright, Noah Petro, LROC WAC and LOLA teams.
Local terrain: NAC_DTM_APOLLO17_2M and NAC_DTM_APOLLO17_MOSAIC_5M, NASA/LRO/LROC; Arizona State University. An 8 km tile is sampled on a 4 m grid, with source-row interpolation in approximately 4.4% missing-data cells. The observation point is 800 m west and 200 m north of the Apollo 17 landing-site anchor. Recorded orthophoto lighting is retained; procedural close-up regolith grain is illustrative.

9. Solar and black-hole visualization
Sun 8K texture: Solar System Scope / INOVE, CC BY 4.0. Filtered solar coloring, flowing plasma, corona and magnetic loops are illustrative, not a measured solar simulation.
Black-hole exterior reference: NASA Goddard visualizations, https://svs.gsfc.nasa.gov/13326/ and https://svs.gsfc.nasa.gov/14585/. Exterior light bending is an approximate shader; the view inside the horizon is explicitly artistic and not an observed interior.

10. NASA spacecraft models
International Space Station and Hubble Space Telescope models/textures: NASA Visualization Technology Applications and Development (VTAD).
Sources: https://science.nasa.gov/resource/international-space-station-3d-model/ and https://science.nasa.gov/resource/hubble-space-telescope-3d-model-2/.
glTF transforms are baked and merged into material batches; embedded image bytes are unchanged. Approximate dimensions are configured to 109 m and 13.2 m. Observation layouts are not live TLE/SGP4 orbit positions or current configuration guarantees.

11. 67P measured nucleus
SPC-ESA MTP019 low-resolution OBJ shape model; ESA/RMOC, ESA/Rosetta/NAVCAM. NASA Planetary Data System / ESA Planetary Science Archive, RO-C-MULTI-5-67P-SHAPE-V2.0.
Source: https://pds-smallbodies.astro.umd.edu/holdings/ro-c-multi-5-67p-shape-v2.0/data/triplate/spc_esa/mtp019/cshp_dv_130_01_lores_obj.obj.
License: CC BY-SA 3.0 IGO, https://creativecommons.org/licenses/by-sa/3.0/igo/. Modified by mirroring handedness, centering, normalizing display radius and calculating smooth geometry normals. The converted model remains under that license; source OBJ and conversion information are provided in the project. Coma, tails and fine surface shading are illustrative, not measured coma physics or a live orbit.

15. Deep-space sky and observed nebulae (v0.7)
Catalog sky: NASA/Goddard Space Flight Center Scientific Visualization Studio, Ernie Wright and Tom Bridgman; https://svs.gsfc.nasa.gov/3895/. Existing NASA-StarMap.jpg source is unchanged. Runtime enhances faint catalog signal while preserving star positions, color and the Milky Way structure. This camera-exposure interpretation is not a claim about unaided human eyesight.
Orion Nebula image heic0601a: NASA, ESA, M. Robberto (Space Telescope Science Institute/ESA) and the Hubble Space Telescope Orion Treasury Project Team. https://esahubble.org/images/heic0601a/
Carina Nebula image heic0707g: N. Smith and NOAO/AURA/NSF. https://esahubble.org/images/heic0707g/
Nebula photos: Creative Commons Attribution 4.0 International, https://creativecommons.org/licenses/by/4.0/; source use terms https://esahubble.org/copyright/. Source JPEG image bytes unchanged. Runtime applies exposure and edge feathering. Published celestial coordinates, photographic field of view and orientation are retained. Filter-composite colors are observational enhancements, not naked-eye colors. No endorsement by NASA, ESA, STScI, NOAO, AURA or NSF is implied.

SIL OPEN FONT LICENSE
This Font Software is licensed under the SIL Open Font License,
Version 1.1.

This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL

-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------

PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font
creation efforts of academic and linguistic communities, and to
provide a free and open framework in which fonts may be shared and
improved in partnership with others.

The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded,
redistributed and/or sold with any software provided that any reserved
names are not used by derivative works. The fonts and derivatives,
however, cannot be released under any other type of license. The
requirement for fonts to remain under this license does not apply to
any document created using the fonts or their derivatives.

DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
include source files, build scripts and documentation.

"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).

"Original Version" refers to the collection of Font Software
components as distributed by the Copyright Holder(s).

"Modified Version" refers to any derivative made by adding to,
deleting, or substituting -- in part or in whole -- any of the
components of the Original Version, by changing formats or by porting
the Font Software to a new environment.

"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.

PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining
a copy of the Font Software, to use, study, copy, merge, embed,
modify, redistribute, and sell modified and unmodified copies of the
Font Software, subject to the following conditions:

1) Neither the Font Software nor any of its individual components, in
Original or Modified Versions, may be sold by itself.

2) Original or Modified Versions of the Font Software may be bundled,
redistributed and/or sold with any software, provided that each copy
contains the above copyright notice and this license. These can be
included either as stand-alone text files, human-readable headers or
in the appropriate machine-readable metadata fields within text or
binary files as long as those fields can be easily viewed by the user.

3) No Modified Version of the Font Software may use the Reserved Font
Name(s) unless explicit written permission is granted by the
corresponding Copyright Holder. This restriction only applies to the
primary font name as presented to the users.

4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
Software shall not be used to promote, endorse or advertise any
Modified Version, except to acknowledge the contribution(s) of the
Copyright Holder(s) and the Author(s) or with their explicit written
permission.

5) The Font Software, modified or unmodified, in part or in whole,
must be distributed entirely under this license, and must not be
distributed under any other license. The requirement for fonts to
remain under this license does not apply to any document created using
the Font Software.

TERMINATION
This license becomes null and void if any of the above conditions are
not met.

DISCLAIMER
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
OTHER DEALINGS IN THE FONT SOFTWARE.

SOLAR SYSTEM SCOPE LICENSE NOTICE
Mars texture: Solar System Scope / INOVE
Source: https://www.solarsystemscope.com/textures/
Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0).
License and full legal terms: https://creativecommons.org/licenses/by/4.0/
Full legal code: https://creativecommons.org/licenses/by/4.0/legalcode

You may copy, redistribute, remix, transform, and build upon the texture for any purpose, including commercially, provided you give appropriate credit, link to the license, and indicate changes. No additional restrictions may be imposed on the licensed texture. No warranties are provided; see the license for the complete terms.

The source JPEG is unmodified. Unity performs platform texture compression and limits its Android size to 4096 pixels.

PICO runtime SDK: Copyright PICO Technology Co., Ltd. Proprietary SDK distributed for PICO application integration; not an open-source attribution license.
SDK permission to include runtime in PICO apps: https://lf3-static.bytednsdoc.com/obj/eden-cn/6810eh7nuvojps/terms/pico-sdk-data-terms.html
Official SDK source: https://github.com/Pico-Developer/PICO-Unity-OpenXR-SDK
PICO SDK/data usage rules: https://developer-cn.picoxr.com/data_usage_guidelines/

67P converted model: CC BY-SA 3.0 IGO. Author: ESA/RMOC, ESA/Rosetta/NAVCAM. Source model and conversions remain under the same license.

Overview 0.11.0 — regional Earth coastal elevation attribution

Region: northern Kauai, Hawaii, USA, including the Na Pali / Kalalau coast.
Coverage: latitude 22.000 to 22.350; longitude -159.850 to -159.250.
Grid: 2161 x 1261. Original sample spacing approximately 28.60 x 30.89 m.
Measured elevation is regional only. The rest of Earth still uses coarse global
geography and illustrative close detail, not a complete surveyed reconstruction.

Source: Mapzen / Tilezen Terrain Tiles, accessed 2026-10-23.
https://s3.amazonaws.com/elevation-tiles-prod/skadi/N22/N22W160.hgt.gz
Registry: https://registry.opendata.aws/terrain-tiles/
Attribution and upstream terms:
https://github.com/tilezen/joerd/blob/master/docs/attribution.md

Credits: Terrain tiles: Mapzen/Tilezen. USGS 3DEP, SRTM and GMTED2010 courtesy
of the U.S. Geological Survey; ocean bathymetry: NOAA ETOPO1.
NOAA: DOC/NOAA/NESDIS/NCEI — National Centers for Environmental Information,
NESDIS, NOAA, U.S. Department of Commerce.
Tilezen's documentation identifies the above USGS/NOAA upstream datasets as
public domain and specifies provider notices and limitations. The NOAA notice
describes US copyright scope. Preserve these credits. No endorsement is implied.
The aggregated tile does not identify the contributing source at each pixel.
The data is used for visual experience, not navigation.

Modifications: decompress HGT, crop the above rectangle without increasing source
resolution, reverse rows to south-first order, replace invalid values below
-30000 with -1000 m, preserve integer elevations, and bake an approximate signed
shore distance using an eight-neighbour chamfer transform. Height >0.75 m defines
the land mask. Shore distance is integer metres, positive on land and negative
offshore, clamped to the int16 range. It is not a tidal or surveyed coastline.

SHA-256, downloaded N22W160.hgt.gz (6558958 bytes):
a8b0db8c5c480af50e5f18a5b2ed89b9a3e67d2f5b8ab8064120d8dce4083ee7
SHA-256, decompressed HGT (25934402 bytes):
09f59268072f0efb56b88be4019f358d471f1a4ee2c2f3abf21fa5e51d00e72b
SHA-256, derived Earth-NaPali-Coast.bytes (10900128 bytes):
a4a995242d06799cbe4449daf48c7e150103d4de14a22e399588260779922ee1

The ECO1 binary has a 44-byte header: ASCII signature, little-endian int32 width
and height, float64 south/north/west/east; each sample is an int16 elevation and
int16 signed shore distance. Runtime sampling and rendering do not increase the
survey's original resolution. Data below sea level is retained; underwater
exploration is not currently provided.

Fine material variations, close basalt rocks/vegetation and water/foam shading
are original illustrative game assets. They are not centimetre survey data.
Regional broad surface colour now uses the separate Sentinel observation below. The black monolith is fictional. The separate Earth visual maps
retain their existing Solar System Scope / CC BY 4.0 attribution.

The source file, conversion script, sources.json and inspection preview are kept
in SourceAssets/EarthCoast. See that folder's README.md for reproduction details.

Sentinel-2 true-colour regional observation (0.11.0)
Contains modified Copernicus Sentinel data 2023.

Sentinel-2B MSI L2A observation: 2023-01-13T21:19:22.455Z.
Item: S2B_4QDK_20230113_0_L2A, MGRS 04QDK.
STAC: https://earth-search.aws.element84.com/v1/collections/sentinel-2-l2a/items/S2B_4QDK_20230113_0_L2A
TCI: https://sentinel-cogs.s3.us-west-2.amazonaws.com/sentinel-s2-l2a-cogs/4/Q/DK/2023/1/S2B_4QDK_20230113_0_L2A/TCI.tif
Official data-use notice: https://cds.climate.copernicus.eu/licences/ec-sentinel

Source is the actual 10 m red/green/blue observation (B04/B03/B02) delivered as
an 8-bit TCI, not generated imagery or a false-colour composite. The source UTM
Zone 4N crop (EPSG:32604) is bilinearly reprojected to EPSG:4326, exact bounds
west=-159.85, south=22.00, east=-159.25, north=22.35. Output RGB JPEG is
6144 x 4096, north at the top, east to the right, with an embedded sRGB profile.
No rotation, mirroring, generative fill or artistic recolouring was applied.
Original photographed light, terrain shadows, white surf and sparse clouds remain.
The photograph is not an unshaded reflectance map and has no centimetre detail.

Cloud fraction in the AOI source classification window: 0.3483%; cloud or shadow:
0.6231%. Valid source pixels: 99.6358%; the tiny missing northeast corner is far
sea, where the renderer retains its existing sea colour. No artificial land fill.
The Copernicus data policy permits reproduction, distribution, modification and
commercial downstream use, with the modified-data attribution above preserved.
No European Union, ESA or data distributor endorsement is implied.

Output Earth-Coast-Color.jpg: 9312166 bytes.
SHA-256: 2122524d1a3b7d958e37d97973e54620f5dfd057f91b68c611e9e257b479a540
Source STAC, source headers, legal-notice snapshot, native and reprojected GeoTIFF
masters, preview, conversion script and full manifest are in SourceAssets/EarthCoast.

Earth 8K visual texture attribution

Author: Solar System Scope / INOVE.
Official source: https://www.solarsystemscope.com/textures/
License: Creative Commons Attribution 4.0 International (CC BY 4.0).
License summary: https://creativecommons.org/licenses/by/4.0/
Full legal terms: https://creativecommons.org/licenses/by/4.0/legalcode

Original files, all 8192 x 4096 pixels (not upscaled by this project):
- 8k_earth_daymap.jpg
- 8k_earth_clouds.jpg
- 8k_earth_specular_map.tif
- 8k_earth_normal_map.tif
Download URLs and SHA-256 hashes are recorded in SourceAssets/Earth8K/sources.json.

Changes by this project:
- Earth-Global-Color.png preserves the day-map RGB, adding inverted matching
specular-map luminance as land alpha.
- Earth-Clouds-8K.jpg is the unchanged original cloud JPEG.
- Earth-Normal-8K.png is a lossless RGB conversion from the original normal TIFF.
- Unity generates filtered mip levels and Android ASTC 6 x 6 compression.
The imagery uses equirectangular longitude/latitude mapping. Color is sRGB;
cloud coverage and tangent normals are imported as linear data.

These are global visual maps, not survey elevation data or street-level imagery.
The separate coarse NASA CPU geography remains at 2048 x 1024 for navigation
and illustrative terrain outside the v0.11 regional coastal dataset. The first
Kauai coastal exploration area instead uses measured regional elevation; see
Earth-NaPali-Coast-SOURCE.txt. Shader microdetail and decorations remain illustrative.

Original texture rights remain under CC BY 4.0; see the license for conditions.
No endorsement by the texture authors or NASA is implied.

This Font Software is licensed under the SIL Open Font License,
Version 1.1.

This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL

-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------

"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).

"Original Version" refers to the collection of Font Software
components as distributed by the Copyright Holder(s).

"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.

1) Neither the Font Software nor any of its individual components, in
Original or Modified Versions, may be sold by itself.

TERMINATION
This license becomes null and void if any of the above conditions are
not met.

Mars texture: Solar System Scope / INOVE
Source: https://www.solarsystemscope.com/textures/
Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0).
License and full legal terms: https://creativecommons.org/licenses/by/4.0/
Full legal code: https://creativecommons.org/licenses/by/4.0/legalcode

The source JPEG is unmodified. Unity performs platform texture compression and limits its Android size to 4096 pixels.

Current music library: 17 developer-supplied tracks.
原初之光 — 宇宙低语 · 上篇
原初之光 — 宇宙低语 · 下篇
原初之光 — 物质觉醒
原初之光 — 第一道光 · 上篇
原初之光 — 第一道光 · 下篇
The Return of Light — 无尽之境 · 上篇
The Return of Light — 无尽之境 · 下篇
The Return of Light — 神圣收缩 · 上篇
The Return of Light — 神圣收缩 · 下篇
The Return of Light — 生命之树的流溢 · 上篇
The Return of Light — 生命之树的流溢 · 下篇
The Return of Light — 容器破碎 · 上篇
The Return of Light — 容器破碎 · 下篇
The Return of Light — 宇宙修复 · 上篇
The Return of Light — 宇宙修复 · 下篇
The Return of Light — 神圣合一 · 上篇
The Return of Light — 神圣合一 · 下篇
The Return of Light: preacher_feng. Developer-supplied AI-generated soundtrack; ambient audio is illustrative, not recorded sound in a vacuum.

Earth close-ground photographic textures: Rock Boulder Dry - Dimitrios Savva / Rico Cilliers, https://polyhaven.com/a/rock_boulder_dry ; Aerial Grass Rock - Rob Tuytel, https://polyhaven.com/a/aerial_grass_rock . Distributed under CC0-1.0: https://creativecommons.org/publicdomain/zero/1.0/legalcode . Source pixels unchanged; project filenames and Unity texture compression/import settings were added. API used only for offline import. These maps add illustrative surface detail, not new surveyed terrain. Source records: EARTH-GROUND-ASSETS.md and SourceAssets/EarthGround/manifest.json.

Audio is supplied by the developer. For AI-generated music, the developer states that commercial-use permission derives from generation under a paid Suno subscription. This records the developer's source declaration; it does not assert exclusive copyright over all AI-generated elements. Source filenames and hashes are retained in SourceAssets/Music/TheReturnOfLight/manifest.json and Music/Playlist.json.

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