Older Than deck / Places, institutions and traditions
International Astronomical Union
Sources and checks
Checked 2026-11-01: Researched by Codex (two independent publishers, verbatim quotes); every counted quote re-found on its page by the server check (content-verify, or content-verify-pdf for PDFs); scope and plausibility reviewed by Claude (AI build agent). Quotes are short passages from each source; for dates the quote is the year as printed, read in context.
“The International Astronomical Union (IAU) was founded in 1919.”International Astronomical Union — institutional History: source, retrieved 2026-11-01; quote re-found by the server check
“The International Astronomical Union was founded in Brussels on 28 July 1919”University of St Andrews — MacTutor,DJF/JOC/EFR,updated November2018: source, retrieved 2026-11-01; quote re-found by the server check
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