Green Fireballs New Mexico: The Meteor Expert Who Said 'These Are Not Meteors'
In 1949, the United States military enlisted the nation's foremost meteor expert to explain a wave of luminous green phenomena over sensitive nuclear sites, only for him to conclude that the objects defied conventional astronomical explanation. Declassified Air Force and FBI files reveal how Dr. Lincoln LaPaz's investigation into the "green fireballs" of New Mexico established a mystery that would echo through intelligence archives for the next fifty years.
The Meteor Expert and the Copper Anomaly
As sightings of anomalous aerial phenomena surged around America's atomic infrastructure, the military turned to Dr. Lincoln LaPaz of the Institute of Meteoritics at the University of New Mexico. LaPaz was tasked with determining whether the green fireballs frequently observed over the region were simply unusual natural meteors. To test this hypothesis, LaPaz collaborated with Dr. W.D. Crozier of the New Mexico School of Mines to conduct "attempts to collect volatilization products from green fireballs" (ec72132902a2f50d).
Because LaPaz suspected the dust would consist of copper rather than the ferromagnetic substances typical of ordinary meteorites, standard magnetic collection methods were abandoned. Instead, Crozier utilized impactment equipment that processed 34 liters of air per minute, capturing particles on microscope slides coated with a glycerin-gelatin mixture and rubeanic acid to test for copper, nickel, and cobalt. Following a fireball sighting on July 24, 1949, near Socorro, New Mexico, Crozier's ground-level air sampling detected unusually large copper particles ranging up to 100 microns.
In a memorandum to Colonel Doyle Rees dated August 17, 1949, LaPaz delivered a stark assessment of these findings. He wrote that if future detailed work confirmed these copper particles were floating down from the phenomena, "then the fireballs are not conventional meteorites" (ec72132902a2f50d). LaPaz emphasized that copper is one of the rarest elements found in meteorites, and he knew of no prior case where even the tiniest particle of copper had been reported in a dust collection of meteoritic origin.
Ten Points of Departure
Archival investigative records from the FBI and Air Force outline distinct differences between the green fireballs and standard meteors. Among the key anomalies noted by investigators were the objects' complete lack of noise and their nearly vertical trajectories, which differed from the typical behavior of entering space debris.
To gather more pristine samples uncontaminated by ground dust, the military authorized high-altitude collection flights. On August 8, 1949, following another fireball incident, a B-25 bomber from Kirtland Field flew at 23,000 feet to intercept the trajectory's air mass. While the flight yielded only a few copper indications deemed to be of surface origin, LaPaz strongly recommended that future collections utilize B-36 or B-50 aircraft flying above 40,000 feet immediately after a sighting to secure definitive proof (ec72132902a2f50d).
The Secret Catalog of Nuclear Proximity
The urgency of LaPaz's research was driven by the locations of the sightings. The objects were repeatedly penetrating the airspace over the most highly classified military installations in the world, including Los Alamos, Sandia Base, and Kirtland Air Force Base.
A May 1950 summary report from the 17th District Office of Special Investigations (OSI) at Kirtland AFB reveals the scale of the monitoring effort. The document notes that during a December 1948 liaison meeting with other intelligence agencies, it was determined that the "frequency of unexplained aerial phenomena in the New Mexico area was such that an organized plan of reporting these observations should be undertaken" (ec72132902a2f50d). This effort resulted in a classified compilation of sightings near nuclear facilities between 1948 and 1950, distributed to the Air Materiel Command and other interested government agencies.
Foreign Technology and the Missing Debris
The concentration of sightings over atomic facilities fueled intense anxiety within the intelligence community that the fireballs were not natural, but rather advanced foreign technology. However, the physical evidence—or lack thereof—confounded investigators.
LaPaz noted that despite extensive air and ground searches along the well-determined earth-trace of a January 30, 1949 fireball, no fragments were ever recovered. The nearly vertical paths of some fireballs extended from altitudes of 100 miles down to ground level, yet they left no impact craters or debris fields. This led to the working theory that the objects were completely volatilized during flight.
The Soviet Mirror: Sary Shagan
The archives demonstrate that the phenomenon of silent, green aerial anomalies over sensitive military sites was not exclusive to the American southwest. A 1977 CIA Intelligence Information Report details a strikingly similar event over the Soviet Union's Sary Shagan Weapons Testing Range, a highly restricted facility used for anti-ballistic missile research.
According to the report, on an evening in late summer 1973, a witness stepped outside while watching a television broadcast and observed an "unidentified sharp (bright) green circular object or mass in the sky" over Site 7 (d3039ed486d8400b). The object was situated at a 70-degree angle and was estimated to be higher than cloud level. Within seconds, the green circle widened, and "several green concentric circles formed around the mass" before the coloring vanished entirely. Much like the New Mexico fireballs, the CIA report explicitly notes that there was no sound or explosion associated with the phenomenon.
The Arc Closes in France
The rigorous methodology applied by LaPaz in 1949 secured his place in the long-term archival history of unidentified aerospace phenomena. Fifty years after his dust-collection experiments in the New Mexico desert, his work was formally cited in a major European defense study.
In 1999, the French association COMETA—composed of former auditors of the Institute of Higher Studies for National Defense (IHEDN)—published an independent report on the defense implications of UFOs. The report's stated goal was stripping the phenomenon of its irrational layer to focus on concrete aeronautical and strategic problems. In their historical review of credible scientific figures who engaged seriously with the topic, the French defense experts explicitly listed Lincoln LaPaz alongside other pioneering astronomers and physicists (2af37a8e08174de4). The inclusion of LaPaz in a modern strategic document underscores how the unresolved questions of the 1949 green fireballs continue to resonate within global military intelligence frameworks.
What the document does not say
To maintain strict archival accuracy, it is necessary to outline what these declassified files do not claim:
- The documents do not conclude that the green fireballs were extraterrestrial spacecraft; LaPaz's memos focus strictly on the chemical anomalies that ruled out conventional meteorites.
- The files do not confirm the existence of a foreign missile program responsible for the New Mexico sightings with physical evidence.
- The archives do not state that the copper particles collected by Dr. Crozier were definitively proven to originate from the green fireballs. LaPaz himself noted that the initial results were "negative or at best inconclusive" pending further high-altitude sampling.
- The CIA report does not identify the green mass over Sary Shagan as a foreign intelligence asset, a weapon test, or a natural atmospheric phenomenon.
- The COMETA report does not claim that the French government solved the cases investigated by LaPaz, only that his historical involvement represents a benchmark for serious scientific inquiry.
Read it yourself
Explore the original declassified documents referenced in this report at UAP Archives:
