Open Platform · Licensing

Licensing matrix

The licences that apply to reuse — the platform's own CC BY-SA 4.0 for the graph and API, and the individual terms of each upstream source — so reuse obligations are never in doubt.

The platform

The knowledge graph, the API responses, and the exports are licensed CC BY-SA 4.0. Attribution is requested as “AsteriaStar” with a link. Upstream source data retains the terms below — always defer to the stricter of the two for a given item.

Upstream sources (42)

Source	Organisation	Usage terms
Arianespace	Arianespace SA
Blue Origin	Blue Origin, LLC
Britannica	Encyclopaedia Britannica
CelesTrak	CelesTrak (Dr. T. S. Kelso)
CSA	Canadian Space Agency
DESI	Dark Energy Spectroscopic Instrument
ESA	European Space Agency
ESA Euclid	ESA Euclid mission
ESA/Hubble	ESA/Hubble (European Space Agency)	ESA/Hubble images are generally licensed CC BY 4.0; attribution is required.
ESA/Webb	ESA/Webb (European Space Agency)	ESA/Webb images are generally licensed CC BY 4.0; attribution is required.
ESO	European Southern Observatory
Event Horizon Telescope	Event Horizon Telescope Collaboration
Gaia	ESA Gaia astrometric survey
Gunter's Space Page	Gunter Krebs — Gunter's Space Page
Hipparcos	ESA Hipparcos space astrometry mission
HYG Database	HYG Database (Hipparcos + Yale Bright Star + Gliese), by D. Nash / astronexus
IAU	International Astronomical Union
IMO	International Meteor Organization
ISRO	Indian Space Research Organisation
JAXA	Japan Aerospace Exploration Agency
LIGO Scientific Collaboration	LIGO Scientific Collaboration & Virgo Collaboration
Minor Planet Center	IAU Minor Planet Center
NASA	National Aeronautics and Space Administration	Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.
NASA ADS	NASA Astrophysics Data System
NASA DONKI	NASA Community Coordinated Modeling Center
NASA JPL	Jet Propulsion Laboratory / Solar System Dynamics
NED	NASA/IPAC Extragalactic Database
NOAA Solar Calculator	NOAA Global Monitoring Laboratory	Public domain (US Government work).
NOAA SWPC	NOAA Space Weather Prediction Center
NSF NOIRLab	NSF National Optical-Infrared Astronomy Research Laboratory
OpenNGC	OpenNGC (M. Verga) — NGC/IC, Messier, and Caldwell catalogue data
Planck Collaboration	ESA Planck mission / Planck Collaboration
Rocket Lab	Rocket Lab USA, Inc.
Roscosmos	State Space Corporation Roscosmos
SDSS	Sloan Digital Sky Survey
SIMBAD	Centre de données astronomiques de Strasbourg (CDS)
SpaceX	Space Exploration Technologies Corp.
STScI	Space Telescope Science Institute	Hubble/Webb images released by NASA/STScI are generally free to use with a credit line; each item's terms are checked before use.
The Nobel Prize	The Nobel Foundation
ULA	United Launch Alliance
US Naval Observatory	United States Naval Observatory
Wikimedia Commons	Wikimedia Foundation	Each file's license (public domain or Creative Commons) and attribution are recorded before use.

The same registry is served as JSON at /api/v0/sources.

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Upstream sources (42)

Source	Organisation	Usage terms
Arianespace	Arianespace SA
Blue Origin	Blue Origin, LLC
Britannica	Encyclopaedia Britannica
CelesTrak	CelesTrak (Dr. T. S. Kelso)
CSA	Canadian Space Agency
DESI	Dark Energy Spectroscopic Instrument
ESA	European Space Agency
ESA Euclid	ESA Euclid mission
ESA/Hubble	ESA/Hubble (European Space Agency)	ESA/Hubble images are generally licensed CC BY 4.0; attribution is required.
ESA/Webb	ESA/Webb (European Space Agency)	ESA/Webb images are generally licensed CC BY 4.0; attribution is required.
ESO	European Southern Observatory
Event Horizon Telescope	Event Horizon Telescope Collaboration
Gaia	ESA Gaia astrometric survey
Gunter's Space Page	Gunter Krebs — Gunter's Space Page
Hipparcos	ESA Hipparcos space astrometry mission
HYG Database	HYG Database (Hipparcos + Yale Bright Star + Gliese), by D. Nash / astronexus
IAU	International Astronomical Union
IMO	International Meteor Organization
ISRO	Indian Space Research Organisation
JAXA	Japan Aerospace Exploration Agency
LIGO Scientific Collaboration	LIGO Scientific Collaboration & Virgo Collaboration
Minor Planet Center	IAU Minor Planet Center
NASA	National Aeronautics and Space Administration	Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.
NASA ADS	NASA Astrophysics Data System
NASA DONKI	NASA Community Coordinated Modeling Center
NASA JPL	Jet Propulsion Laboratory / Solar System Dynamics
NED	NASA/IPAC Extragalactic Database
NOAA Solar Calculator	NOAA Global Monitoring Laboratory	Public domain (US Government work).
NOAA SWPC	NOAA Space Weather Prediction Center
NSF NOIRLab	NSF National Optical-Infrared Astronomy Research Laboratory
OpenNGC	OpenNGC (M. Verga) — NGC/IC, Messier, and Caldwell catalogue data
Planck Collaboration	ESA Planck mission / Planck Collaboration
Rocket Lab	Rocket Lab USA, Inc.
Roscosmos	State Space Corporation Roscosmos
SDSS	Sloan Digital Sky Survey
SIMBAD	Centre de données astronomiques de Strasbourg (CDS)
SpaceX	Space Exploration Technologies Corp.
STScI	Space Telescope Science Institute	Hubble/Webb images released by NASA/STScI are generally free to use with a credit line; each item's terms are checked before use.
The Nobel Prize	The Nobel Foundation
ULA	United Launch Alliance
US Naval Observatory	United States Naval Observatory
Wikimedia Commons	Wikimedia Foundation	Each file's license (public domain or Creative Commons) and attribution are recorded before use.

The same registry is served as JSON at /api/v0/sources.