Mount Palomar Observatory Sighting and Geiger Counter Anomaly (1949)

The October 1949 sightings

On the afternoon of 14 October 1949, Harley C. Marshall, the public relations manager at Mount Palomar Observatory, reportedly watched a formation of 16 to 18 silver objects fly across the sky at high speed. According to a UAP Discovery forum compilation that reproduces older accounts, Marshall described them as a "perfect V of V's" with no tails or wings, moving northwest with a jet-like sound until they disappeared into cloud. About five minutes later, electrician Benjamin Traxler reportedly saw a single dark object moving southwest. The objects are described in the Air Technical Intelligence Center (ATIC) file as cigar-shaped, roughly 500 feet or more in length, at about 5,000 feet altitude, with radar contact recorded as "yes" according to a summary of the declassified file. The Blue Book record itself is only partly legible in the online scan, so the size and radar details should be treated as reported rather than confirmed.

The Geiger counter and the investigation

The more unusual part of the episode concerns instrumentation. A Navy Electronics Laboratory Geiger counter at the observatory reportedly jumped off scale for several seconds during the sighting. The forum compilation reports 21 further off-scale episodes over the next ten days, roughly fitting a 90-minute cycle, which it calls a phenomenon "not seen before or after." Two Office of Naval Research representatives and two Navy Electronics Laboratory staff visited the site. Navy aircraft flew near the observatory on 21 October and 2 November in attempts to trigger the counter, without success. The same source says investigators also received a telescope photograph George Adamski had taken in February 1949, which the Navy attributed to electrical discharge in the camera during film advance.

The file quotes the investigating staff as saying "the tripping of the Geiger counter mechanism is unexplainable," yet a summary of the same record also reports the official conclusion that a faulty fuse clip, which arced when jarred, caused the readings and that no correlation with the sightings was confirmed. Those two statements sit uneasily together, and the original PDF would be needed to settle which reflects the final finding.

Explanations and disputes

The official reading is that the objects were conventional aircraft and the counter was malfunctioning. The summary says the Office of Naval Research in Pasadena reached that conclusion. Skeptics would point to the lack of any aircraft identification as the weak point, and to the fact that a repeating off-scale reading is easier to attribute to a loose component than to an external source. Ufologists, by contrast, cite the coincidence of a witnessed formation with an instrument that failed in the same window and then continued failing, and they note that the formation's reported speed and silence are difficult to match with the aircraft of the day.

The case is contested on both sides. Because the evidence rests on a handful of named or partly named witnesses, a single instrument and a summary of an archive file, there is no independent physical trace of the objects. The episode also stands out because the Navy investigated an instrument anomaly as much as a visual sighting, which is uncommon in the early Blue Book files.

Related reports and Blue Book context

The Palomar case was handled within the Air Force's early UFO program, which was then run by ATIC and became Project Blue Book. The file references Captain E. J. Ruppelt, the Blue Book director who later wrote about the program, and says that in 1952 Air Force personnel visited Los Alamos to discuss whether radiation readings and sightings might be linked. The same archive holds a second Palomar report from 25 September 1950, in which two unnamed officers of the 22nd Bombardment Wing described a bluish-white light moving across the sky with a loud, swirling noise "similar to rocket exhaust." That report gives no identification.

The 1949 event is worth knowing for three reasons: it is an early example of a sighting that drew instrument data into the investigation, it shows the Navy engaging with UFO reports in the late 1940s, and it demonstrates how difficult it was to close a case when the equipment that recorded anomalies could itself be faulty. It is still usually cited as unresolved in popular accounts, though the official file records an explanation.