Gemini IV was the second crewed mission of the Gemini series. Astronauts James McDivitt and Edward White successfully completed the four-day flight between June 3 and June 7, 1965. The mission included the first American spacewalk. This collection of documents contains a transcription of the astronauts recounting their observations of bright particles outside the spacecraft, dated circa June 25, 1967, on pages 78-81, and page 101.

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.

Gemini 7 was the tenth crewed American spaceflight. This document is a transcript of communications between the flight crew, Astronauts James “Jim” Lovell and Frank Borman, and the Manned Flight Center (now known as Johnson Space Center) in Houston, Texas. The transcript begins with Borman’s report of a “bogey,” contemporary nomenclature for an unknown aircraft, as well as a debris field. Borman described the debris field as consisting of “very, very many […] hundreds of little particles.” He estimated the particles’ distance from the spacecraft to be four miles. Lovell described observing a “brilliant body in the sun against a black background with trillions of particles on it.” This document also includes handwritten notes documenting the encounter, annotated with the phrase “UFO Sighting by Borman” in the top right corner.