{"type":"documents","slug":"2026-pursue-release-04-001-doe-uap-d004-los-alamos-conference-on-aerial-phenomena-1949","title":"DOE-UAP-D004, Los Alamos Conference on Aerial Phenomena, 1949","url":"https://disclosdex.com/documents/2026-pursue-release-04-001-doe-uap-d004-los-alamos-conference-on-aerial-phenomena-1949","description":"This transcript records the February 1949 Los Alamos conference on green fireballs and the competing explanations discussed by attending scientists.","date":"1949-02-16T00:00:00.000Z","tags":["Report"],"updated":"2026-07-10T00:00:00.000Z","disclosureRating":6,"connectionCount":1,"content":{"markdown":"DOE-UAP-D004, Los Alamos Conference on Aerial Phenomena, 1949 is a record released in PURSUE Release 04 on July 10, 2026. It originates from the Department of Energy and concerns a conference held on February 16, 1949, at Los Alamos, New Mexico. The transcript was transmitted on March 22, 1949.[^1][^2][^3]\n\n<PDF src=\"https://www.war.gov/medialink/ufo/071026/release_04/documents/DOE-UAP-D004_Los-Alamos-Conference-on-Aerial-Phenomena_1949.pdf\" />\n\n## Provenance and Context\n\nThe record was obtained through official declassification channels and provided by the Department of Energy.[^1][^2][^3]\n\n## Detailed Content\n\nThe document is a transcript of a 1949 conference held at Los Alamos Scientific Laboratory (now Los Alamos National Laboratory), Los Alamos, New Mexico. Attendees included several eminent scientists and physicists, many of whom had contributed to the development of the first nuclear weapons during the Manhattan Project. The purpose of the conference was to discuss and gather hypotheses to account for the nature and origin of a phenomenon involving \"green fireballs\" that had been reported over a period of several months in the vicinity of the laboratory. The group did not reach a consensus on a likely attribution, though a leading hypothesis was that the observations may have been related to meteors entering the atmosphere at a shallow angle and high altitude. Dr. Edward Teller suggested that if not a \"material body,\" an \"electron phenomenon\" might be the cause. Dr. Lincoln LaPaz, an expert in meteoritics, said \"nothing like this, to [his] knowledge, has ever been observed in the case of meteorite drops.\"[^3]\n\n## What the Record Supports\n\nThe transcript documents the reasoning of the scientists present, not a resolution. The conference ended without an agreed explanation for the green fireballs, and the meteor hypothesis was disputed by LaPaz's own field expertise.[^3]\n\n## References\n\n[^1]: [Department of War PURSUE page](https://www.war.gov/UFO/#release)\n[^2]: [Department of War PURSUE data file (uap-data.csv)](https://www.war.gov/Portals/1/Interactive/2026/UFO/uap-data.csv)\n[^3]: [DOE-UAP-D004, Los Alamos Conference on Aerial Phenomena, 1949 remote release asset](https://www.war.gov/medialink/ufo/071026/release_04/documents/DOE-UAP-D004_Los-Alamos-Conference-on-Aerial-Phenomena_1949.pdf)","readingTime":"2 min read"},"relatedRecords":[{"ref":{"type":"updates","slug":"2026-pursue-disclosure-releases-04-05","title":"PURSUE disclosure releases 04 and 05 ingestion","url":"https://disclosdex.com/updates/2026-pursue-disclosure-releases-04-05"},"direction":"inbound","weight":1}],"citation":{"canonicalUrl":"https://disclosdex.com/documents/2026-pursue-release-04-001-doe-uap-d004-los-alamos-conference-on-aerial-phenomena-1949","title":"DOE-UAP-D004, Los Alamos Conference on Aerial Phenomena, 1949","publisher":"Disclosdex","retrievedFrom":"https://disclosdex.com/api/v1/documents/2026-pursue-release-04-001-doe-uap-d004-los-alamos-conference-on-aerial-phenomena-1949","license":"CC-BY-4.0"}}