GEIPAN — CNES (France) UAP records

GEIPAN (Groupe d'Études et d'Informations sur les Phénomènes Aérospatiaux Non identifiés) is the UAP-investigation unit of CNES, the French national space agency, operating since 1977 (originally as GEPAN, then SEPRA). It is the world's longest-running official civilian UAP programme, and uniquely publishes its full investigation case files — gendarmerie reports, witness statements, météo and radar checks, and laboratory analyses — openly online. The records here are a curated set of its Class D cases: sightings that remained unidentified after full investigation.

Every GEIPAN case carries a four-tier classification: A and B are identified, C lacks enough information to conclude, and D is a strange phenomenon that resisted explanation despite sufficient data. The crown jewel is Trans-en-Provence (1981), where INRA laboratory analysis found measurable changes to soil and vegetation at the landing site. Read these as investigation dossiers, in French, not as official endorsements of an extraterrestrial cause.