NASA-UAP-D008, Apollo 12 Medical Debriefing - Tape 12, 1969
Official description
During a medical debriefing of the crew of the Apollo 12 mission, Commander Charles “Pete” Conrad, Command Module Pilot Richard “Dick” F. Gordon, and Lunar Module Pilot Alan L. Bean describe their observations of instances of light flashes or “streaks of lights.” The astronauts each reported that these experiences occurred in the dark as they tried to sleep. The NASA medical team considered whether similar phenomena reported by Apollo 11 Lunar Module Pilot Buzz Aldrin had been attributable to exposure of the retina by cosmic rays. NASA later determined that the phenomena reported by the Apollo 12 flight crew were internal to the astronauts’ vision rather than external light sources.
✦ AI summary
This is an audio recording of a NASA medical debriefing session with the Apollo 12 crew — Commander Charles "Pete" Conrad, Command Module Pilot Richard "Dick" Gordon, and Lunar Module Pilot Alan Bean — discussing light flashes and streaks they observed while trying to sleep in the dark spacecraft cabin. A flight surgeon/interviewer opens by asking about a report referencing "coronal discharges," prompting the crew to describe the phenomenon in detail: flashes or streaks seen with one eye at a time (not both), occurring at various angles though often horizontal and moving right to left, comparable to someone flashing a light. The crew connects this to earlier reports from Apollo 11's Buzz Aldrin and discusses NASA's prior, unsuccessful attempts (dating to Project Mercury) to photograph retinal streaks from cosmic ray strikes. NASA later concluded the phenomena were internal to the astronauts' vision (cosmic-ray interaction with the retina) rather than external light sources. Several passages are inaudible.
Generated with AI from the official file — may contain errors.
▸Transcript
[00:00] Interviewer: Listen, we read this paragraph in here about these, quote, "coronal discharges" that you guys were seeing, and that completely stops us. Tell us how this came about, and who talked to you about it, and what you saw. [00:19] Crew: Somebody reported on one of the earlier flights that some guy, like at the letters paper or somewhere, they shifted down and made the case about two things — where the VHF radio noises, which could be discharges from some places, played, and the other one, where I thought it was a new flight, we said [unintelligible] planned to do a spacecraft. It's [unintelligible] with their eyes closed. They noticed that when they were awake at night, the spacecraft was dark, and they thought [something in their eyes]. But whoever this guy [was] wants to know — that's a perfectly known phenomenon. You can get discharges across your eyes from gamma rays or something. [00:56] Crew: So they had a bunch of things — would we hold our eyes and face the moon? You know, when we were orbiting it, because you'd get less discharges facing the moon and away from it. But it doesn't have to be near the moon or anywhere — the first night it happened. And if you keep your eyes closed while you're awake down there and it's dark, and you think about it — when it happens, you notice it's one eye. It's not a discharge if you see it in both eyes — you really see it with one eye or the other, and you can tell what kind it is. We had two kinds — I guess it's [the retina struck] perpendicular, or a discharge parallel — and we'd get either a flash like that, or we'd get a streak. [01:48] Crew: And I feel that — I know the way they got a flash or a streak. And I, for some reason, got more with my left eye than my right eye. But I could tell which eye it was that I was seeing it in. I'm trying to tell you the reason — because each flash was always out of that side of the spacecraft. That's what I was going to point out — I called all the right ones my eyes. [laughter] [02:22] Crew: They should have protected you, Dick. They should have picked them all up. [02:26] [unintelligible] [02:48] Crew: I remember their conversation about it — they thought of it as something penetrating the spacecraft. [02:56] Crew: What Peter described is the exact phenomenon [experienced by] all three of us. You can see a light — there's a flash out there, or sometimes it would be a streak. And I saw them in both eyes, either eye — I can't remember if it was more predominant in one or the other. But I agree with Peter — the phenomenon, if you're not seeing it in both eyes, is not something external. [03:19] [unintelligible] [03:29] Crew: Well, we've been looking for cosmic rays — cosmic ray strikes, and heavy particles, heavy nuclei that go through. We started, clear back in Mercury, taking photographs of the retina to see if you could see streaks across the retina, and stuff. We never could find any. So we stopped that early, and, well, by the end of the... [03:51] [unintelligible] [04:02] Crew: Well, probably what it's doing anyway is probably hitting just a single cell. That's all it would take, particularly to make this flash — you hit a single cell. [04:12] Crew: I saw one night — I was looking at the MDC, a handrail up above, and one of my [streaks], I don't know where it went — right along my handrail for about that [length] — that's just... I just happened to be looking at that. [04:27] Crew: And now you can almost see it as well. — That's right, where it's just lying there. — He's holding your eyes. — He wanted to yell with my eye, and he hasn't already seen it — he didn't believe it on Earth. [04:39] [unintelligible] [05:02] Interviewer: Let me ask you one more question about [unintelligible]... Oh, here. [05:07] [unintelligible] [05:15] Interviewer: Okay, were these things random, or did they all seem to be in one direction? Like, were they always horizontal, or were they at random? [05:24] Crew: They could be at any kind of angle. [05:26] [unintelligible] [05:40] Crew: If I knew where I was looking, it always seemed like a horizontal streak, a little bit above the center, and it always seemed to me it went from right to left. [05:49] [unintelligible] [06:03] Crew: Like somebody was flashing a light at you. [06:06] [unintelligible] [06:19] Interviewer: Is that about the same for both of you? Is that the same reaction you had, Dick and Al, the way Pete described it? [06:29] [unintelligible] [06:39] Crew: But about the same — they seemed to appear about the same place. — No, I know. [06:44] [unintelligible] [07:32] Crew: And then I'd sit there for a while and say, okay, was that the left eye or the right eye? It'd take you a while to sort it out. But you'd usually figure it out. Now, you know what you're doing — you're supposed to be sleeping. [laughter] [07:48] Crew: And there was a comment that— [recording ends]
Generated with AI from the official file — may contain errors.
Source: U.S. Department of War / AARO — public domain · war.gov/ufo