Apollo 11 Technical Crew Debriefing, 1969

This is the Apollo 11 Technical Crew Debriefing, dated July 31, 1969 and prepared by the Mission Operations Branch, Flight Crew Support Division of the National Aeronautics and Space Administration. It is a confidential transcript. In it, Armstrong, Aldrin and Collins describe a bright L-shaped object seen about a day out from the Moon, which they could not identify and suspected came from the spacecraft. They also report light flashes inside the cabin and a bright light from Earth that was probably a reflection off a lake.

From the source:Release of 2026-05-08 Apollo 11 was the third crewed mission to the Moon and the first to land Astronauts on the lunar surface. This document is an excerpt from the Apollo 11 Technical Crew Debriefing (Volumes 1 and 2) from July 31, 1969. The document highlights three observations: one, an object on the way out to the Moon; two, flashes of light inside the cabin; and three, a sighting on the return trip of a bright light tentatively assumed by the crew to be a laser. • Page 6-33 (Vol. 1). [Lunar Module Pilot for Apollo 11, Buzz Aldrin]: “The first unusual thing that we saw I guess was 1 day out or something pretty close to the moon. It had a sizeable dimension to it, so we put the monocular on it.” The crew speculated that it could have been the S-IVB stage of the Saturn V launch vehicle. • Page 6-37 (Vol. 1). [Lunar Module Pilot for Apollo 11, Buzz Aldrin] “The other observation that I made accumulated gradually. I don’t know whether I saw it the first night, but I’m sure I saw it the second night. I was trying to go to sleep with all the lights out. I observed what I thought were little flashes inside the cabin, spaced a couple of minutes apart…” • Page 21-1 (Vol. 2). [Lunar Module Pilot for Apollo 11, Buzz Aldrin] “I observed what appeared to be a fairly bright light source which we tentatively ascribed to a possible laser.”

## CONFIDENTIAL

some static electricity because I was also able, in moving my hand up and down the sleep restraint, to generate very small sparks of static electricity. But there was a definite difference between the two as I observed it more and more. I tried to correlate this with the direction of the sun. When you put the window shades up there is still a small amount of leakage. You can generally tell within 20 or 30 degrees the direction of the sun. It seemed as though they were coming from that general direction; however, I really couldn't say if there was near enough evidence to support that these things were observable on the side of the spacecraft where the sun was. A little bit of evidence seemed to support this. I asked the others if they had seen any of these and, until about the last day, they hadn't.

## ARMSTRONG

Buzz, I'd seen some light, but I just always attributed this to sunlight, because the window covers leak a little bit of light no matter how tightly secured. The only time I observed it was the last night when we really looked for it. I spent probably an hour carefully watching the inside of the spacecraft and I probably made 50 significant observations in this period.