Transparency
Source Quality
Every factual page draws from a curated registry of primary agencies, observatories, databases, and reference works — each with a country, authority type, and reliability note.
Primary vs secondary
Space agencies, observatories, scientific unions, databases, and peer-reviewed literature are treated as primary authority. Reference works and media repositories are secondary context.
No scraping
We reference and link to sources; we do not scrape them, and we do not publish unverified claims.
Reference
| Source | Country | Authority |
|---|---|---|
| NASA | United States | Space agency |
| NASA JPL | United States | Space agency |
| ESA | Europe | Space agency |
| CSA | Canada | Space agency |
| JAXA | Japan | Space agency |
| Roscosmos | Russia | Space agency |
| ISRO | India | Space agency |
| IAU | International | Scientific union |
| Minor Planet Center | International | Reference database |
| US Naval Observatory | United States | Observatory |
| IMO | International | Scientific union |
| NSF NOIRLab | United States | Observatory |
| ESO | Europe | Observatory |
| SIMBAD | France | Reference database |
| NED | United States | Reference database |
| NASA ADS | United States | Peer-reviewed literature |
| Hipparcos | Europe | Space agency |
| Gaia | Europe | Space agency |
| AsteriaStar (derived) | International | Reference work |
| Wikidata | International | Reference database |
| HYG Database | International | Reference database |
| OpenNGC | International | Reference database |
| Britannica | United States | Reference work |
| The Nobel Prize | Sweden | Reference work |
| Planck Collaboration | Europe | Space agency |
| LIGO Scientific Collaboration | International | Observatory |
| Event Horizon Telescope | International | Observatory |
| ESA Euclid | Europe | Space agency |
| DESI | International | Observatory |
| SDSS | International | Reference database |
| NOAA SWPC | United States | Observatory |
| NOAA Solar Calculator | United States | Observatory |
| NASA DONKI | United States | Reference database |
| CelesTrak | United States | Reference database |
| STScI | United States | Observatory |
| ESA/Hubble | Europe | Observatory |
| ESA/Webb | Europe | Observatory |
| Wikimedia Commons | International | Media repository |
| SpaceX | United States | Reference work |
| Arianespace | Europe | Reference work |
| ULA | United States | Reference work |
| Rocket Lab | United States / New Zealand | Reference work |
| Blue Origin | United States | Reference work |
| Gunter's Space Page | International | Reference work |