Gemini 9 Debriefing, June 3-6, 1966 — NASA File
Gemini IX (renamed Gemini IX-A) was the seventh crewed flight of the Gemini series, launched on June 3, 1966. The mission’s primary objectives included a spacewalk and multiple scientific and medical experiments.
Incident Overview
June 3-6, 1966, in Low Earth Orbit, NASA preserved a documentary record that was declassified and published on June 12, 2026 as part of the third tranche of the Department of War’s Presidential Unsealing and Reporting System for UAP Encounters (PURSUE).
What the government released
Gemini IX (renamed Gemini IX-A) was the seventh crewed flight of the Gemini series, launched on June 3, 1966. The mission’s primary objectives included a spacewalk and multiple scientific and medical experiments. This document, dated June 16, 1966, is a transcript of a NASA debriefing of astronauts Thomas Stafford and Eugene Cernan. Pages 2-5 of this document contain the astronauts’ accounts of their observations of “flashing lights” and “sparkles” during the mission.
Primary-source excerpt
Drawn directly from the released document: “THey got pictures of the zodiacal light and the Milky Way and the guiding was good even for the 30 sec sweeps . On Tri X these are the best pictures yet of the zodiacal light surpassing the results achieved on Gemini V. S011; About 40 usable pictures of the airglow were obtained. THese contain some of the same star fields pictured in S00l. Guiding was very good even though Cernan had to do the experiment from a very awkward position. Only a small portion aJf the/ surface has been a na lyzed, but on this portio portion 9 impacts are recorded. Hemenway is investigating possible “contamination between experiments before sending the”.
Status of the case
Records released under the PURSUE program are designated unresolved by the All-domain Anomaly Resolution Office, which means the federal government has not concluded the events were anomalous, has not concluded they were conventional, and has not ruled out either possibility. Where AARO has offered a likely source for an item — an infrared sensor aboard a military aircraft, a commercial camera, or a known optical effect — that attribution is the agency’s working assessment rather than a final determination. Conventional candidates such as drones, balloons, flares, satellites, parallax and forced-perspective artifacts, and ordinary aircraft remain on the table for any unresolved case absent better data than a single sensor pass or a witness recollection.