Project 10073 Record — Los Alamos, New Mexico, 18 January 1969

On 18 January 1969, a civilian employee of the Los Alamos Scientific Laboratory reported a UFO sighting in Los Alamos, New Mexico. The witness, who possessed 13 years of experience in the interpretation of photomicrographs, observed a single, self-luminous, blue-green spherical object for approximately four hours. The object was initially sighted in the east, close to the horizon in the SE, and eventually moved to an elevation of approximately 75 degrees in the ESE. The witness noted that the object appeared to be a 'tethered lighted balloon of large diameter' and expressed concern that it might pose a hazard to private aircraft. The witness reported the incident to the Los Alamos Police Department and Kirtland Air Force Base, though neither entity confirmed the presence of an object. The witness also noted that the object exhibited an oscillating movement and eventually became indistinguishable from the surrounding stars. The Air Force, through the Foreign Technology Division, requested further information via an AF Form 117. The official conclusion recorded on the Project 10073 record is that the object was a 'Possible Astro (SIRIUS)'.