Above: licences that travel with its files ========================================== Above's own code and words are its own. The data and the type below come from others; their notices follow. Where each one is used is described on /about/#sources. 1. data/stars.json ------------------ Derived from the HYG database, version 4.1, by David Nash (https://www.astronexus.com/projects/hyg), licensed under the Creative Commons Attribution-ShareAlike 4.0 International License (https://creativecommons.org/licenses/by-sa/4.0/). Changes: kept the stars of magnitude 6.5 and brighter, without the Sun; right ascension converted from hours to degrees; values rounded; a missing colour index set to 0.6; Bayer abbreviations turned into Greek letters. data/stars.json is shared under the same licence, CC BY-SA 4.0. 2. data/cities.json ------------------- Derived from GeoNames (https://www.geonames.org/), cities15000, licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). Changes: kept capitals and places of 600,000 people or more; kept name, country, position and time zone; added Greenwich (Royal Observatory) by hand. 3. data/constellations.json and data/milkyway.png ------------------------------------------------- Derived from d3-celestial 0.7.35 (https://github.com/ofrohn/d3-celestial): constellation figures, names and label positions, and the Milky Way outline from the Milky Way Outline Catalog by Jose R. Vieira. Changes: right ascension normalised to 0-360 degrees and rounded; the Milky Way outline filled, softened, given a drawn texture and rendered as an image. 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. 4. data/events.json ------------------- Computed with Astronomy Engine by Don Cross (https://github.com/cosinekitty/astronomy, MIT licence), used only to build the file and not shipped. Eclipse predictions by Fred Espenak, NASA's GSFC. Meteor shower data from the International Meteor Organization's Meteor Shower Calendars 2026 and 2027 by Juergen Rendtel. Checked against the US Naval Observatory's Astronomical Applications tables. 5. data/dso.json ---------------- Derived from OpenNGC by Mattia Verga (https://github.com/mattiaverga/OpenNGC), release v20260501, licensed under the Creative Commons Attribution-ShareAlike 4.0 International License (https://creativecommons.org/licenses/by-sa/4.0/), and from Wikipedia (https://en.wikipedia.org/), text under the same licence, CC BY-SA 4.0: - the table of the 110 Messier objects in the article "Messier object", revision 1372398875, which cites the SEDS Messier catalogue (distances, magnitudes, the NGC number taken for Messier 102); - the infoboxes of the articles on the other objects, named one by one in tools/build-dso.mjs (distances, magnitudes); - the magnitude of the Jewel Box (NGC 4755) from the SEDS NGC pages (https://spider.seds.org/). Changes: kept 137 objects (all 110 Messier objects and 27 bright NGC, IC and other objects); positions turned into degrees and rounded; OpenNGC types grouped into nine kinds; distances in light years, a range given as its middle. data/dso.json is shared under the same licence, CC BY-SA 4.0. 6. data/objects.json and the pages under objects/ ------------------------------------------------- Facts about stars from the HYG database, version 4.1 (see 1), CC BY-SA 4.0: distance from the Hipparcos parallax, spectral type, visual luminosity. Facts about the Sun, the Moon and the planets from NASA's planetary fact sheets (NSSDCA, Goddard Space Flight Center, https://nssdc.gsfc.nasa.gov/planetary/factsheet/), in the public domain. Facts about the deep sky from data/dso.json (see 5). The one-sentence summaries are Above's own. data/objects.json is shared under CC BY-SA 4.0. 7. fonts/mona-sans-*.woff2 -------------------------- Copyright 2022 The Mona Sans Project Authors (https://github.com/github/mona-sans), with Reserved Font Name "Mona" 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: https://openfontlicense.org ----------------------------------------------------------- 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. 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