# Third-party notices: the Globe in Motion front page

Hosted at https://globeinmotion.com/. This file covers the hub itself: `index.html`, `assets/` and `tools/`. Each app in its own folder has its own `README.md` and `THIRD_PARTY_NOTICES.md`.

The hub loads nothing from other sites. Every file it uses is served from this site.

| Component | Where | Licence |
| --- | --- | --- |
| Natural Earth 1:110m coastlines | `assets/data/coast-110m.json`, simplified, via Earth Time Machine | Public domain |
| Natural Earth 1:10m populated places, the 160 largest | `assets/data/cities-lite.json`, fields selected, via Born From Space | Public domain |
| d3-celestial 0.7.35 data by Olaf Frohn: stars to magnitude 4.8, constellation lines, bright-star names | `assets/data/sky-lite.json`, cut down from Born From Space's `data/sky.json` | BSD 3-Clause (text below) |
| Go fonts by Bigelow & Holmes | `assets/fonts/`, WOFF2 subsets from Empires Globe and Air Time Machine | Go font licence, BSD-3-Clause style (`assets/fonts/LICENSE`) |
| Screenshots and share images of the apps | `assets/shots/`, `assets/share/` | Our own captures. They show NASA GIBS and Blue Marble imagery (no US copyright; NASA asks for acknowledgement), Natural Earth (public domain) and Cliopatria borders (Seshat Global History Databank, CC BY 4.0) |

The engraved plates on the front page are computed by `assets/engrave.js` (MIT, this repository). Positions of the Sun, Moon and planets use standard low-precision formulas from the public astronomical literature. The orrery uses J2000 mean orbital elements, and the analemma uses the usual equation-of-time approximation.

Facts quoted on the page:
- Voyager 1 reaches one light-day from Earth on 18 November 2026 at 06:16:07 UTC, as announced by NASA/JPL.

## d3-celestial (BSD 3-Clause)

Copyright (c) 2015, Olaf Frohn
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.