REF: UAP/1940s/021Unexplained
1948-1951
Green fireballs
New Mexico (Los Alamos/Sandia) · USA·Recurring phenomenon near nuclear sites·1940s
Unexplained
§ ASummary
Repeated green fireballs over sensitive installations alarmed AEC/military; meteor expert Dr. Lincoln LaPaz concluded they were not conventional meteors.
§ BWitnesses
LaPaz, AEC security, military pilots
§ CEvidence & Documentation
Conference records (Los Alamos 2/1949); Project Twinkle instrument data
§ DOfficial Investigation
Project Twinkle (1949-51)
§ EStatus Assessment
Never resolved; Twinkle inconclusive, data collection ended
§ FVerifiable Sources
Project Twinkle final report; FBI files; Ruppelt (1956)
§ GCross-referenced cases6
1947-06-21🇺🇸 USA
Maury Island incident
Crash-debris claim (hoax)
1947-06-24🇺🇸 USA
Kenneth Arnold sighting
Pilot sighting (origin of 'flying saucer')
1947-07-08🇺🇸 USA
Roswell incident
Crash-debris recovery
1947-07-04🇺🇸 USA
United Air Lines Flight 105
Airline crew sighting
1947-07-07🇺🇸 USA
Rhodes photographs
Photographic
1947-07-08🇺🇸 USA
Muroc AFB (Edwards) sightings
Military base multi-sighting