Astronomy Codexery — Data & Quality

We publish our audit record because accuracy claims should be checkable. Every entry on this site runs through an automated fact-audit pipeline (accuracy audit → source-grounded repair → visual QA); this page is generated from that pipeline's own report, not written by hand.

Last full accuracy audit: 2026-08-28 · 5 entries checked · 3 flagged · 6 issues confirmed · 3 corrected · 3 still open

Recent findings (audit lane, verbatim)

Cosmic inflation — Guth first proposed inflation in 1980, not 1979.

Cosmic inflation — The 2012 Breakthrough Prize in Fundamental Physics was awarded to Alan Guth, Andrei Linde, and others (including Michael Turner and the WMAP team), not exclusively to Guth and Linde.

Crab Nebula — The entry states the supernova was observed on 4 July 1054 without noting the calendar discrepancy (Julian vs Gregorian), which is a factual inaccuracy about the date.

Crab Nebula — The entry claims William Parsons observed and drew the nebula in 1844 using a 36-inch telescope, but the famous drawing that gave it the name 'Crab' was made in 1848 using a 72-inch telescope; the entry conflates the two observations.

Dark nebula — The statement 'visibility=Visible only using radio waves or infrared light; some naked-eye examples exist' is contradictory and factually incorrect: dark nebulae are visible to the naked eye as dark patches (e.g., Coalsack), so they are not 'visible only using

Open data

All content is fetchable as JSON at /data/content/ · llms.txt · sitemap

Corrections

Spotted an error? Suggest an edit — reader reports go straight into the audit queue.

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