Datasets
- Satellites and launches: GCAT (opens in a new tab), the General Catalog of Artificial Space Objects by Jonathan C. McDowell. Licence: CC BY 4.0 (opens in a new tab). We count, group and chart it. Our counts aren't endorsed by the author.
- National park locations and facts: National Park Service API (opens in a new tab). US government work, public domain.
- Modelled sky glow: National Park Service sky anthropogenic light ratio model (opens in a new tab) for the contiguous United States. US government work, public domain.
- Cloud cover: NASA POWER (opens in a new tab), monthly mean cloud amount. Data obtained from the NASA Langley Research Center POWER Project.
- Planet and moon figures: NASA Planetary Fact Sheet (opens in a new tab).
- Dark matter figures: Planck Collaboration, Planck 2018 results, cosmological parameters (ESA).
- Wow! signal: Ohio State University Big Ear archive.
- Spacecraft and moons: NASA mission pages for Voyager and Europa Clipper.
Photos and illustrations
- NASA: images from the NASA Image and Video Library (opens in a new tab), used under NASA's media usage guidelines (opens in a new tab). NASA doesn't endorse this site.
- National Park Service: photos credited on the page where they appear.
- Wikimedia Commons: images released into the public domain or under CC0, credited in the caption.
- Licensed stock photos: park and night sky pictures used under a standard commercial licence.
- Illustrations: pictures marked as an artist's concept or illustration in their caption aren't photographs.
Trademarks
NASA, the NASA insignia, Starlink, SpaceX, OneWeb, Kuiper and other names are used only to describe the things they name. Space Osmosis isn't affiliated with or endorsed by their owners.
How we use these sources is explained on How we work.