# Third-party notices

This app bundles the third-party work listed below. Every item is public domain or under a permissive MIT/BSD-style licence.

| Component | Where | Licence |
| --- | --- | --- |
| Astronomy Engine 2.1.19 (`astronomy.browser.min.js`) by Don Cross | `vendor/astronomy-engine/`, unmodified | MIT (`vendor/astronomy-engine/LICENSE`) |
| Natural Earth 1:110m coastlines, simplified | `data/coast-110m.json`, the front page's copy | Public domain |
| Natural Earth 1:10m populated places, with IANA time zones | `data/cities.json`, Born From Space's copy | Public domain |
| Go fonts (Regular, Italic, Smallcaps, Mono) by Bigelow & Holmes | `fonts/`, WOFF2 subsets | BSD-3-Clause style (`fonts/LICENSE`) |

Nothing is loaded from a CDN, a font service or any other site, and the app makes no network requests beyond its own files.

## Natural Earth

Made with Natural Earth. Free vector and raster map data at [naturalearthdata.com](https://www.naturalearthdata.com/). Natural Earth data is in the public domain; no permission is needed to use it.