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We reference and link to sources; we do not scrape them, and we do not publish unverified claims.

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
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