Caelum Incognitum — The interactive encyclopedia of ufology
SIGMA 2 commission (3AF)
Organizations & programs
A technical commission of the French Aeronautics and Astronautics Association devoted to the study of unidentified aerospace phenomena. Created in 2008 as the PAN commission, it became SIGMA, then SIGMA 2 in April 2013 with a mandate refocused on the scientific and technical analysis of cases. Its progress report, published on 23 June 2021 in French and English, runs to 377 pages. It concludes that the reality of the phenomenon is beyond dispute even though hoaxes exist and are demonstrated, and that its origin, natural or artificial, remains an open question case by case. The commission works with GEIPAN and with foreign bodies.