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Attributions & Licenses

AstroTonight is made possible by the following open data sources, APIs, and open-source projects. We are grateful to these organizations and contributors.

🌐 APIs & Data Sources

National Weather Service (NWS)

Weather forecasts and conditions for the United States.

Public Domain
www.weather.gov

NOAA Space Weather Prediction Center

Aurora forecasts, solar activity, and geomagnetic storm predictions.

Public Domain
www.swpc.noaa.gov

Open Notify

International Space Station pass predictions and current position.

Open/Free
open-notify.org

ipapi.co

IP-based geolocation for automatic location detection.

Free Tier (Commercial OK)
ipapi.co

🖼️ Images

NASA/JPL-Caltech

Planetary images, nebulae, galaxies, and spacecraft photography.

Public Domain
www.nasa.gov

ESA/Hubble

Hubble Space Telescope imagery of deep space objects.

CC BY 4.0
esahubble.org

Wikimedia Commons

Constellation maps, star charts, and astronomical illustrations.

Various (CC BY-SA, Public Domain)
commons.wikimedia.org

IAU Constellation Maps

Official constellation boundary maps and star patterns.

CC BY-SA 3.0
www.iau.org

⭐ Astronomical Data

Stellarium

Astronomical algorithms and object catalog references.

GPL
stellarium.org

SIMBAD Astronomical Database

Star catalog data, magnitudes, and coordinates.

Academic Use
simbad.u-strasbg.fr

Messier Catalog

Historic deep sky object catalog compiled by Charles Messier.

Public Domain
en.wikipedia.org

💻 Open Source Libraries

Next.js

React framework for production web applications.

MIT
nextjs.org

React

JavaScript library for building user interfaces.

MIT
react.dev

Tailwind CSS

Utility-first CSS framework.

MIT
tailwindcss.com

Zustand

Lightweight state management for React.

MIT
github.com

Lucide Icons

Beautiful, consistent icon set.

ISC
lucide.dev

date-fns

Modern JavaScript date utility library.

MIT
date-fns.org

🙏 Special Thanks

To the global astronomy community, amateur astronomers, and astrophotographers who share their knowledge and passion for the night sky. Clear skies!

If you believe any content is incorrectly attributed or used in violation of its license, please contact us at support@foxxception.com