Overview
Renowned UFO researcher and former Silicon Valley venture investor Dr. Jacques Vallée announced on April 2, 2026 that he is resigning from the CNES‑GEIPAN expert panel and will cease all official UFO‑related work in France. Vallée’s decision follows an open letter he addressed to Jean‑Jacques Velasco, the former head of France’s official UFO investigation unit, in which he alleges that Velasco’s recent book accuses him of acting as an “American spy.” The letter, posted on the Sentinel News platform, has quickly become a focal point for debate within both the French and international UFO research communities.
The Open Letter
In the 2‑page correspondence, Vallée writes from his San Francisco address, thanking Velasco’s publisher for the copy of the book and noting the “multiple personal attacks against my integrity and abilities as a scientific researcher.” He cites two passages that he says are factually incorrect. First, Vallée disputes Velasco’s claim that the 1945 Trinity nuclear test and the 1947 Roswell incident occurred within a “few days” of each other, emphasizing the two‑year gap and the 279 km distance between the sites. Second, he refutes a description of the Trinity site as a “desert region solely inhabited by native Indian tribes,” providing demographic data to show that the area was populated by Anglo‑Saxon and Hispanic communities at the time of the test. Vallée marks the disputed statements in bold within the letter and concludes that the inaccuracies “left me in shock,” adding that a confidential file on Roswell remains “tucked away in a drawer.”
Resignation and Its Significance
Vallée’s resignation from the CNES‑GEIPAN panel marks the first time the American‑born researcher has formally withdrawn from France’s official UFO‑investigative framework. CNES, France’s space agency, established GEIPAN (the Groupe d’Études des Phénomènes Aérospatiaux Non‑identifiés) in 1977 to analyze civilian reports of unidentified aerial phenomena. Vallée, who served on the panel as an external expert since 2022, has been praised for bringing a multidisciplinary perspective that blends computer science, data analysis, and historical research. In his letter, he states, “I am compelled to highlight passages … that left me in shock,” and adds that continuing on the panel “under these conditions would compromise my scientific integrity.” The resignation is expected to leave a gap in the panel’s international expertise, prompting CNES to seek a replacement with comparable credentials.
Community Reaction
The announcement has elicited a range of responses. French ufologists, including former GEIPAN analyst Marie‑Claire Dubois, expressed disappointment but urged calm, noting that “personal disagreements should not detract from the broader mission of transparent data collection.” In the United States, the Mutual UFO Network (MUFON) released a brief statement acknowledging Vallée’s contributions and emphasizing that “the scientific study of UAPs thrives on open dialogue, even when disagreements arise.” Social‑media commentary has been mixed; some users criticize Velasco for alleged slander, while others caution against inflaming tensions that could undermine collaborative research. Notably, no formal legal action has been announced by either party.
Looking Ahead
Vallée’s departure underscores the fragile nature of cross‑national cooperation in UFO research, a field that remains marginal in many governmental budgets. Analysts suggest that the incident may prompt CNES to reinforce its internal review procedures for published works by former officials, to avoid future accusations of misrepresentation. Meanwhile, Vallée indicated that he will continue “independent research” and maintain his “confidential file” on Roswell, hinting that future publications could shed new light on the historic case. As the community watches, the episode serves as a reminder that even seasoned investigators must navigate personal credibility alongside scientific inquiry.
