CORROBORATED
CF-GEI-20040501622 CORROBORATED
The Blaisy-Bas Venus Misidentification
CASE FILE — CF-GEI-20040501622 — CASEFILES CLASSIFIED ARCHIVE
Date Date when the incident was reported or occurred
2004-05-02
Location Reported location of the sighting or event
Blaisy-Bas, Côte-d'Or, Bourgogne, France
Duration Estimated duration of the observed phenomenon
Over 30 minutes each night
Object Type Classification of the observed object based on witness descriptions
light
Source Origin database or archive this case was sourced from
geipan
Witnesses Number of known witnesses who reported the event
2
Country Country where the incident took place
FR
AI Confidence AI-generated credibility score based on source reliability, detail consistency, and corroboration
85%
On the nights of May 2-3, 2004, a father (T1) and son (T2) in Blaisy-Bas, France observed what they described as intensely bright yellow and green luminous spheres in the night sky. The initial observation occurred on May 2 at approximately 23:30 hours, with a follow-up sighting the next evening around 20:30 hours. The witnesses began their observation with the naked eye, then escalated to binoculars, and finally recorded the phenomenon with a camcorder. T1 described seeing "a large luminous ball that was 10 times larger than a star, it was green in color," while T2 stated his father called him saying "come see, there's a star bigger than the others. I looked and saw a large yellow and green star."
The witnesses reported that the main luminous sphere appeared to approach and recede rapidly, described by T1 as "resembling a tennis ball always in movement, approaching rapidly and moving away just as rapidly." More strikingly, they observed what appeared to be additional luminous balls forming a V-formation above the main object, descending rapidly toward village lights before departing at high speed. T2 also reported the phenomenon making "zigzags from right to left and up and down." The observations were directed toward the northwest, with the Moon positioned in the opposite direction on the second night. Both witnesses emphasized the extraordinary luminosity compared to surrounding stars.
This case was originally classified as 'D' (unexplained) by GEIPAN under the designation "DIJON (21) 2004" but was reclassified to 'B' (probable identification) following re-examination using improved analytical software and accumulated investigative experience. The video footage mentioned by witnesses was transmitted to gendarmerie but was not available to GEIPAN for analysis during the re-examination.
02 Timeline of Events
2004-05-02 23:30
Initial Sighting - First Night
Father (T1) observes unusual bright luminous sphere from window, appears green and approximately 10 times larger than surrounding stars. Calls son to witness.
2004-05-02 23:35
Binocular Observation Begins
Witnesses escalate to binocular observation. Begin perceiving additional details including apparent approach/recession movements and color variations (yellow and green).
2004-05-02 23:45
Video Recording and V-Formation
T1 begins recording with camcorder at maximum zoom. Witnesses report seeing additional luminous balls forming V-formation above main object, descending toward village lights before rapidly departing. Perceived strangeness intensifies significantly.
2004-05-02 00:00+
Extended Observation Period
Continued observation of phenomenon showing zigzag movements, rapid approach/recession patterns. Object described as resembling tennis ball in constant motion. Observation continues for over 30 minutes total.
2004-05-03 20:30
Second Night Observation
T1 observes and films the phenomenon again at earlier hour (around 20:30-22:30). Notes Moon in opposite direction, fixing observation direction as northwest. Similar characteristics observed.
2004-05-03 21:00
Additional Objects Observed
T2 reports seeing a luminous ball return with another smaller one, later identified as likely corresponding to Pollux and Castor taking Venus's initial position in the sky.
2004-05 (Post-incident)
Video Submitted to Gendarmerie
Witnesses submit video footage to local gendarmerie. Case initially classified as 'D' (unexplained) by GEIPAN.
2020s (Re-examination)
GEIPAN Reclassification
Case re-examined using modern software and accumulated expertise. Astronomical reconstruction performed. Classification changed from 'D' to 'B' (probable Venus identification) based on detailed analysis.
03 Key Witnesses
Anonymous Witness T1 (Father)
Civilian
medium
Primary witness who initiated the observation and operated the camcorder. Observed phenomenon on both nights.
"Je me suis mis à la fenêtre et c'est là que j'ai vu dans le ciel une grosse boule lumineuse qui était 10 fois plus grosse qu'une étoile, elle était de couleur verte. / I went to the window and that's when I saw in the sky a large luminous ball that was 10 times larger than a star, it was green in color."
Anonymous Witness T2 (Son)
Civilian
medium
Secondary witness, called by his father to observe the phenomenon. Provided corroborating testimony.
"Mon père m'a appelé en me disant viens voir il y a une étoile plus grosse que les autres. J'ai regardé et j'ai vu une grosse étoile jaune et verte. / My father called me saying come see, there's a star bigger than the others. I looked and saw a large yellow and green star."
04 Analyst Notes -- AI Processed
GEIPAN's detailed astronomical reconstruction provides compelling evidence for Venus misidentification. On May 2, 2004, Venus was indeed the dominant celestial object in the northwest sky, appearing significantly brighter than surrounding stars. The astronomical analysis reveals that Venus, combined with Saturn, Mars, Elnath, and Capella, formed a natural V-configuration pointing downward toward Venus—matching the witnesses' description of luminous balls in V-formation. This configuration descended from 10° elevation at 23:30 to the horizon by 00:40, consistent with the reported descent toward village lights. The later appearance of "a ball that returned with another smaller one" corresponds to Pollux and Castor taking Venus's initial position.
The case demonstrates classic characteristics of astronomical misidentification: extended observation duration (>30 minutes), minimal positional change, repeated observation on consecutive nights in the same general location and appearance, and direction toward a prominent celestial object. The perceived movements—approach/recession, zigzagging—align with well-documented atmospheric effects and optical illusions. GEIPAN notes that intensity variations caused by atmospheric opacity changes are commonly misinterpreted as distance changes. Critically, the escalation of perceived strangeness occurred primarily after using binoculars and especially the camcorder, suggesting instrumental artifacts amplified the witnesses' sense of anomaly. GEIPAN policy now excludes cases where strangeness is primarily derived from photographic/video equipment rather than naked-eye observation, as such artifacts frequently generate false anomalies.
05 Theory Comparison
BELIEVER ANALYSIS
Partial Misidentification with Unknown Element
While Venus likely explains the primary bright object, some witness testimony remains unexplained by pure astronomical configuration. The rapid descent of the V-formation "toward village lights" and subsequent rapid departure suggests dynamic behavior inconsistent with slowly-setting celestial objects. T1's description of the main sphere "approaching rapidly and moving away just as rapidly" and resembling "a tennis ball always in movement" seems excessive for atmospheric scintillation effects alone. The fact that GEIPAN originally classified this as 'D' suggests experienced investigators initially found elements genuinely unexplained. The unavailable video footage may contain evidence beyond simple Venus observation that would contextualize the witnesses' conviction.
SKEPTIC ANALYSIS
Cognitive Bias and Expectation Effects
Once witnesses identified the initial bright object as potentially anomalous, confirmation bias may have led them to interpret normal astronomical phenomena as extraordinary. The use of equipment created an investigative mindset, priming witnesses to discover additional anomalies. The father-son dynamic may have reinforced mutual conviction, with shared observation creating a feedback loop of escalating interpretation. The decision to film suggests pre-existing interest in unusual phenomena. The consistent observation on two consecutive nights, rather than confirming anomaly, actually supports astronomical identification—true UFOs rarely return to exact positions, but celestial objects reliably do.
06 Verdict
ANALYST VERDICT
This case represents a textbook astronomical misidentification, specifically of the planet Venus augmented by instrumental artifacts. GEIPAN's confidence in this explanation is high, supported by precise astronomical reconstruction matching witness descriptions, characteristic misidentification patterns, and the progression from modest strangeness (bright colored star) to heightened strangeness only after instrumental observation. The initial 'D' classification likely resulted from the dramatic witness descriptions of V-formations and rapid movements, but re-analysis reveals these elements either match natural astronomical configurations or represent known optical/instrumental illusions. The case's significance lies not in the phenomenon observed, but in demonstrating how optical equipment can transform mundane astronomical observations into seemingly extraordinary events, illustrating the critical importance of distinguishing naked-eye observations from instrumentation-mediated perceptions in UFO investigation methodology.
AI CONFIDENCE SCORE:
85%
07 Community Discussion
VIEW ALL >// NO COMMENTS YET
Be the first field agent to contribute analysis on this case.
08 Live Chat 1 ROOM
ENTER LIVE CHAT
Real-time discussion with other field agents analyzing this case.