GEIPAN, the official UAP investigation unit of France's national space agency CNES, has published roughly 3,000 case investigations drawn from 8,000 testimonies since 1977, the longest-running continuously-operating government UAP program in the world. Open the full archive at GEIPAN (CNES) ↗
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GEIPAN case 2023-12-51504 (classification D1): a CNES field-investigated report of three reddish toroidal rings in triangle formation, moving silently over Hem (Nord, France) for about ten seconds on 16 December 2022.
GEIPAN witness questionnaire for case 2023-12-51504: a single observer in Hem (Nord, 59), France, reports three reddish rings arranged in a triangle crossing the night sky for about ten seconds on 16 December 2022, classified D1 (unidentified after investigation).
GEPAN Technical Note 16 (March 1, 1983), the official CNES forensic dossier on the January 8, 1981 Trans-en-Provence ground-trace case investigating Renato Nicolaï's (anonymized as 'COLINI') sighting and the soil and vegetation analyses that followed.
GEPAN Technical Note No 9 surveys the state of magnetohydrodynamics (MHD) worldwide and reports preliminary CNES experiments on MHD action against the bow wave of a cylinder, framed as a probe of J.-P. Petit's model for the silent, abrupt, shock-free motion reported in UAP witness accounts.