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reference

Data sources: the complete ledger behind every rendered layer

Every integrated dataset is listed here with its provider, release, licence, attribution, spatial and temporal coverage, resolution, processing steps and verification checksum. 13 datasets currently back the renderer.

Measured facts

Datasets listed
13
Planetary state archive
Geometric Cartesian state vectors for major-body centres
Stellar catalogue
Gaia DR3 — 371,766 measured sources
Galactic model
230,000 derived density tracers
Archive checksum
cb97b2ce6c41a33539e3bc7a32f7c5ed3fc27a50ed0299978af94e6a79ad9fad
Archive file
/data/horizons-earth-centered-2020-2040.json (2,221,200 bytes, Float64 little-endian)
Coverage
2020-01-01 00:00 TDB — 2040-01-01 00:00 TDB
Attribution
NASA/JPL Horizons On-Line Ephemeris System
Licence
United States Government work; NASA/JPL attribution requested

How to read this ledger

A provider returns a provenance record with every payload, and the record travels to the interface unchanged. The ledger below is assembled from those same runtime records, plus counts and checksums extracted from the shipped manifests by a reproducible script, so nothing here is hand-typed.

Where a dataset has a limitation that affects interpretation, it is listed with the dataset rather than buried in a footnote. Missing coverage is never filled: it stays missing or falls back to a named lower-resolution product.

Verification policy

  • Every binary asset is SHA-256 verified before it reaches the GPU.
  • Disjoint ingest responses are hashed individually, and their ordered concatenation and source-id ledger are hashed separately.
  • A candidate dataset with no checksum cannot activate; the metadata gate rejects it.
  • Source terms, attribution and licences are rechecked before each production release.
  • Data that is not redistributable is delivered as a build-time derivative or through a relay, and the derivative is hashed too.

Reporting a provenance problem

If a dataset appears with an incorrect category, licence, attribution or resolution, that is a correctness bug and not a cosmetic one. The ledger records the exact provider version and check date for every entry so a claim can be audited against its source.

Every dataset COSMOS ships

  • JPL Horizons planetary state archive (2020–2040)NASA/JPL Horizons · derived-scientific-model · One discrete geometric state vector per object at JD 2461281.5 TDBHorizons API 1.3; DE441/current centre solutions; queried 2026-08-29 · United States Government work; NASA/JPL attribution requested · NASA/JPL Horizons On-Line Ephemeris System · checked 2026-08-29 · coverage: Sun, Moon, planet centres, and Pluto centre in an Earth-centred ecliptic J2000 frame
  • JPL Horizons Jupiter-centred Galilean archive (2020–2040)NASA/JPL Horizons · derived-scientific-model · io 0.08333333333333333 d; europa 0.125 d; ganymede 0.25 d; callisto 0.5 d sampling, composed with the same-epoch Jupiter stateHorizons API 1.3; queried 2026-08-30 · United States Government work; NASA/JPL attribution requested · NASA/JPL Horizons On-Line Ephemeris System · checked 2026-08-29 · coverage: 2020-01-01 00:00 TDB — 2040-01-01 00:00 TDB; Jupiter-centred ecliptic J2000.0 / ICRF
  • NASA Blue Marble surface imageryNASA Global Imagery Browse Services (GIBS) · observational-composite · 500 m source visualization; delivered to zoom 8 (~611 m/px at equator)GIBS best-available static layer, checked 2026-08-29 · NASA imagery usage guidelines; no commercial-provider dependency · Imagery courtesy NASA EOSDIS GIBS · checked 2026-08-29 · coverage: Global Web Mercator coverage to ±85.0511° latitude
  • NASA Moon Trek LROC WAC morphology mosaicNASA Solar System Treks / JPL Moon Trek · observational-composite · 303 pixels/degree, approximately 100 m/pixel at the lunar equatorMoon Trek WMTS release exposed 2026-08-29 · NASA/PDS public-domain data; cite NASA/GSFC/Arizona State University and LROC Team · NASA/GSFC/Arizona State University; tiles served by NASA/JPL Moon Trek · checked 2026-08-29 · coverage: Global equirectangular WAC morphology mosaic; missing service tiles remain explicit gaps
  • USGS/NASA Viking MDIM 2.1 colorized global mosaicNASA/JPL Mars Trek · USGS Astrogeology · NASA Ames · observational-composite · 232 m/pixel source; 326 m/pixel finest delivered tiles at equatorMDIM 2.1; NASA Trek matrix checked 2026-09-05 · USGS public-domain product; no use constraints · USGS Astrogeology / NASA Ames / NASA/JPL Mars Trek; Viking imaging teams · checked 2026-09-05 · coverage: Global planetocentric, east-positive longitude; historical multi-observation mosaic
  • MESSENGER MDIS enhanced-colour global mosaicNASA/JPL Mercury Trek · USGS Astrogeology · observational-composite · 665 m/pixel delivered NASA Trek color matrix; underlying MESSENGER BDR reference product is 166.31 m/pixelNASA Trek WMTS matrix checked 2026-09-06; browser delivery to z7 · NASA/USGS public scientific data; retain mission and provider attribution · NASA/JHUAPL/Carnegie Institution/ASU; USGS Astrogeology; NASA/JPL Mercury Trek · checked 2026-09-06 · coverage: Global simple cylindrical map; planetocentric latitude, positive-east longitude, −180° to 180°
  • Cassini ISS PIA07782 Jupiter cloud-top mapNASA/JPL Photojournal · Cassini ISS · observational-composite · Smallest visible atmospheric features approximately 120 km; not a uniform pixel-resolution claimPIA07782; source bytes checked 2026-09-06 · NASA/JPL image policy; retain credit and do not imply endorsement · NASA/JPL/Space Science Institute · checked 2026-09-06 · coverage: Global 180° planetocentric latitude × 360° longitude cylindrical map; poles are less resolved through haze
  • Hubble OPAL Cycle 32 Saturn cloud-top mapMAST/STScI · Hubble Outer Planet Atmospheres Legacy · observational-composite · 5 pixels per degree; approximately 210 km equatorial map sampling, not a uniform atmospheric feature-resolution claimCycle 32 Rotation A; source bytes checked 2026-09-06 · MAST HST data policy; retain NASA, ESA, STScI, and OPAL credit · NASA, ESA, STScI, and the OPAL team · checked 2026-09-06 · coverage: Global 360° System III west-longitude mosaic, decreasing to the right, from −90° to +90° planetographic latitude
  • Measured Saturnian ring boundary radiiNASA Goddard Space Flight Center / NASA Saturnian Rings Fact Sheet · measured-catalogue-data · Ring boundaries represented by published mean radii; no particle-scale structureFact sheet checked 2026-09-06 · NASA public scientific information; retain attribution · NASA GSFC / NASA NSSDC · checked 2026-09-06 · coverage: D through F main rings; Cassini Division represented as a physical gap
  • Gaia DR3 stellar catalogue inside 100 parsecsESA Gaia Archive · measured-catalogue-data · Individual Gaia DR3 catalogue sourcesGaia DR3; manifest checked 2026-09-05 · Gaia public archive data; follow ESA/Gaia/DPAC acknowledgement and citation guidance for publication. · ESA/Gaia/DPAC and the Gaia Archive · checked 2026-09-05 · coverage: All-sky catalogue volume within 100 pc, subject to the recorded parallax, uncertainty, and G-magnitude selection.
  • AllWISE W1 3.4 μm all-sky survey contextNASA/IPAC Infrared Science Archive; WISE/NEOWISE; IRSA-hosted HiPS release · observational · Order-0 overview samples about 6.87 arcminutes per pixel; the instrument's 6.1 arcsecond resolution is not delivered by this overviewHiPS orders 0–8, 512 px tiles; checked 2026-09-25 · IPAC/NASA copyright and acknowledgement terms; remote-service delivery only · NASA/IPAC Infrared Science Archive; WISE/NEOWISE; IRSA-hosted HiPS release · checked 2026-09-25 · coverage: All-sky HiPS in ICRS; observations 2010-01-07 through 2010-08-06, as stated by the pinned IRSA HiPS properties
  • COSMOS Milky Way structural density reconstructionCOSMOS Milky Way reconstruction pipeline · derived-scientific-model · 230,000 weighted Monte Carlo density tracers; not individual starsv1; generated 2026-09-05T00:13:06.042Z · COSMOS-generated binary model; underlying parameters cited to their publications. No source imagery is redistributed. · Jurić et al. (2008); McMillan (2017); Wegg, Gerhard & Portail (2015); GRAVITY Collaboration (2021); Bennett & Bovy (2019). · checked 2026-09-05 · coverage: Smooth stellar thin/thick discs and inner halo through 20 kpc Galactocentric radius; central bulge through 4 kpc; long bar through 5 kpc half-length.
  • SDO HMI/AIA solar disk layer foundationNASA Solar Dynamics Observatory · observational · Pending selected product and instrument sampling validationfoundation-v1; concrete timestamped products pending · NASA SDO data policy; retain instrument and wavelength credit · NASA/SDO/HMI and NASA/SDO/AIA · checked 2026-09-06 · coverage: Solar disk observation plane; timestamp and viewing geometry required

Content updated 2026-09-26. Every value on this page is computed from the shipped datasets; where a source publishes no value, the page says so instead of estimating one.