This file contains segment 2 of 2 of the Apollo 14 post-mission crew debriefing at the Manned Spacecraft Center (now Johnson Space Center), Houston, Texas. In this continued segment, crew members and debriefers further discuss the “light flash phenomena,” a then novel, now well-documented biological effect where high-energy cosmic rays pass through the eye and strike the retina, causing the perception of light streaks or flashes.
The summary above is sourced from the released file metadata as published to war.gov. The analysis sections below are original to this tracker.
📝 Transcript (Whisper-generated)
Automatic speech-to-text transcript generated with OpenAI Whisper from the released audio. Machine-generated - expect occasional errors on proper nouns and radio-garbled passages. Verify anything load-bearing against the source file above.
Most of my streaks appeared to be on the periphery , and , uh , for the first several days , I got the impression that this , this direction was predominant . Later on , it appeared that I don't think I could get that , that good a pattern , but that was my first impression for the first couple of days . The uh next question is , uh , was there any apparent direction of propagation and could you tell it was coming from one side to the other or was it just a . A flash . Several times you did say from the left to the right or something like that . Tried to correlate it , but in my case I couldn't really correlate a pattern out of it . Yeah , I would think that the time period in which we tried to report them streak by streak , flash by flash was representative . And , uh , it was my feeling that it was generally random during that time period and , uh , Therefore , generally random throughout the time that we were noticing them . No , I meant , could you detect that it was moving from one side to the other . It was , it was moving in a specific , a specific , a specific flash . Yes , yes , but you could see it as it traveled from one side to the other . Yes , you really think we tried to report it that way , didn't you ? You did report it . That's the way puzzling is because it happens , it has to be very fast , you know . Isn't that question kind of redundant then ? I don't believe you . I . Was there some character to these flashes that had some , some aspect of direction ? I mean , were they all the same rod shaped or were they , did they have a tail on them ? Well , what I saw , what I reported as a streak was simply that . Uh , now , maybe the way we determined the direction subconsciously was that it was a ball of light moving in a direction leaving a tail , but I don't , I can't say that for sure . All I reported was a streak , and I had the impression of it moving from one direction to the other , and I reported that direction , and I , I can't clarify it much more than that . Maybe , maybe while you're asking a question , we just tell the lights . I think they can see this in the darkened room , but just the idea is to try to see whether this is what you saw or similar to it . I think you need to light up . Well , can you see anything ? Yeah , except that's what it looked like , except it was traveling . In other words , uh , it started out and it definitely progressed across the field of view direction of motion per individual . We did that right , yeah , except you're not traveling . It was traveling . You saw it . I never did see two simultaneously either . Neither do I . You have two streaks in that . I never saw that . The , uh , at one time you said you saw a semicolon-shaped thing . So what a semicolon shaped object . This was in the 1st , 1st report . Before the I never did . I don't if I reported it , that's what I saw , but I don't remember it . Did you see anything that looked like this ? All I can say is whatever was reported is what I saw . No , I , you know , we , we discussed the various shapes prior to flight , and I concentrated pretty hard on trying to , trying to see the shapes , and I think as I reported , no , it was either a streak and just a rather simple streak or it was a , a flash and rather a simple flash , nothing too exotic about it , and on . A more rare one would be maybe just a pinpoint of light for an instant rather than get the idea of a of a flash . There would just be a pinpoint for a second and it would be gone , but that was , that was more rare than the other two . By by a flash you mean a distributed sort of thing . Yeah , I meant , you know , like watching an explosion , you know , just a ball versus just a , just a steady dot , yes . Was it , was it like this at all ? Can you see that ? No . Likely this one this . I see . Can't say it . We're not getting any lighting . I don't think it's lighting . Oh , there , there was something just as you turned it there . OK , I can see that . You mean multiple , uh , well , This one . OK , that , that to me would be the pinpoint that , that I'm describing . The , uh , the , the eruption or the , the nova as we call them , would be more of an explosion . Yeah . How about this ? Yeah , yeah . Were there more dots than that ? Well , you've got a very , very bright center and a diffused edge . I would say that , uh , the impression I had was you would have a , an area like that indicating a blow up , but the center wasn't predominantly that bright . But that's getting closer to what we would call what I would refer to as a nova or a or a flash . It's not as bright as what I call a nova . Yeah . Ed , was your Nova , an explosion like this or a discrete flag flash ? No , it was , uh , what I call a nova was , was more of a , a blob that seemed to start with that and kind of expand , more diffused , yeah , and more diffused as , as the time went on . But brighter than that , brighter than that , yes , that's what I about what I'd call a flash or a star . Uh , here , here again , you've got too much contrast between the center and the , uh , diffused area there though . That's also your time frame that you're flashing , that's too long . It was faster than that . But am I right , Ed , from what you just said that that when you said flash you really meant a star and not a , not a , not what you just described ? I think I almost tended to use flash and star interchangeably . That's not true for you . No , uh , when I flash , Nova to me were essentially the same thing . The only distinction I make is the , the pinpoint versus an explosion . Uh-huh . OK , I think what Stu was calling a , a pinpoint was about what I'd call a star or a flash , and a Nova to me was a much bigger , brighter thing . OK , I got a couple of quick ones . First of all , the cabin lighting , uh , exactly was it completely dark or were there some instrument lights still on ? Absolutely . Absolutely . OK . Wait a minute . Well , there is , you're talking about the time period that we ran this , uh , quantitative report , right ? Right , right . So completely dark . OK . And , uh , did you have your eyes closed most of the time or were they open in the dark cabin ? Mine we had gold . I had gold even though we had the window shades on when we'd roll around so the sun would hit some of the windows , there'd be some light seepage around and we were aware of that ahead of time . So that during that time period we , at least I made an attempt to keep my eyes closed , open otherwise , and of course we closed our eyes when they flipped his flashlight on . But generally speaking , eyes were open . No , mine , mine was , uh , almost closed all the time . I was floating down the corner of the LED , but I , I kept my eyes closed because , uh , I didn't know when we might roll into the sun and I didn't want to pick up any light at all . OK , the next question on the flashlight was , uh , when you shined it in your eyes , what was the approximate duration in each eye ? About how many seconds ? Well , I just kind of moved it across for 5 seconds or so , 5 or 6 seconds . It hurt . It was very frightening . And uh next question on uh still your orientation in the LAB uh you said you were looking toward plus X is , uh , will you ? Across . I was , uh , generally , you know , how you , you have the three couches , and , uh , plus X is , uh , I was oriented this way with my head looking face up , uh , down in this corner . So your head was in the same direction as it would be if you were on the couch , just rotated . Yes , that's it . OK . And uh the next question is , uh , in almost every case you did report that it was in one eye or the other . I believe there was one incident where you had , uh , both eyes . And my question is , uh , uh , it may be somewhat redundant , but , uh , are you absolutely certain that you could distinguish that it was one eye as opposed to , uh . Yeah , I felt I was getting more on the left than the right for some reason . Well , in fact , in fact , you're all heavily biased towards the right on the , on the one on your reports , really , very heavily , like , like 3 or 4 to 1 . I would have sworn that I was biased to the left . You have 1212 right and 6 . Left and you had 10 right and 4 left and uh of the ones you reported , you had 6 right and 2 left and the rest were no reports of both eyes . It was all very heavily by the right eye . That's very surprising . No , well , you know , while we're talking about that , I , it seems to me that uh . I would get a flash or a streak or whatever the phenomenon or whatever the shape was simultaneous with somebody else reporting . That's the next question . We , uh , uh , there were 3 from listening to the tapes , 3 events and it occurred in , in cases where , uh , different pairs were involved , uh , which were coincidences where I think in one case , uh , uh . Ed , you said , uh , flash , and then Al , you said simultaneous with him . I had a flash in the whole right eye . Now my question would be , uh , when you , when it was simultaneous , was it after he began speaking , or was it in fact , uh , was his words good enough for you to , to have been a mark on your flash ? Well , certainly within a fraction of a second , I think it was simultaneous . Yeah , the couple of times it happened to me , it was his mark or whoever's mark it was was good enough . Yeah , OK , same here . And , uh , then the next question is , uh , earlier before the session and when you were describing some of the subjective observations you mentioned the , uh , halos that you'd seen that you'd see a flash followed by , uh , and we finally got to take his halo off and put it away . The uh excuse me , I'm sorry . Now , the , uh , uh , the after effects , were they , were they present most of the time ? Did you see , did you have , uh , cognizance of , of a spike and then a sort of a glow afterwards ? Only on what I call the nova or the supernova . Is that true for you to do ? I didn't really noticed a halo effect myself . I , I guess I'm not sure what , what we're calling the , the , the halo effect . You mean a , a diffused , uh , brightness , more , more like an afterglow than halo . Did , did I call any of those ? I sure don't remember it . No , I think it described it . Yeah , I , I don't think I saw any of those . OK . And uh oh the other question we had was uh uh do you remember making any observations in lunar orbit ? Uh , it's not , I know there were no formal periods , but , uh , you know , I thought about that on the way back , and , uh , I was , I was so tired that night that I , I really don't remember seeing any flashes , but I , I didn't look for any either . So I , I guess the question would be , I , I consciously did not see any , but . I sure , that's , I , I , I wouldn't take that as a data point . OK , that's fine . Yeah . And then , uh , the final question that I have is , uh , after our formal session , uh , that was on , what was it about 191 GET , uh , you then had a sleep period later on . Do you remember whether you saw any during that period closer in ? It's significant whether you're inside the magneto pole or not . I don't consciously recall , but I don't really recall that there was any night except on the lunar surface that I didn't . At some time or another see some . You , you definitely , you didn't see any on the lunar surface ? I just , no , I don't remember about the lunar surface . There was precious little sleep that night anyhow , so . OK , well that's set all the questions on here . We douse the lights for a minute , get , uh , while , while you're dousing a lot , I have one additional question . Did you get the impression that light flashes could have been within the cabin or definitely within your eye ? Definitely within the eye . OK . The , uh , I wanna get some idea about orientation and , uh , and length of the streets . Did you ever see anything that No , I never did . The , uh , you , you use the uh terminology of uh 6 o'clock or hours of the clock . Does that mean to you , uh , when you say 6 o'clock to the center , about how long the streak is that ? That's a hard question to answer . Uh , if you are visualizing uh something about um . Oh , about the arm's length away from you . How long would you say your longest streak was ? That long ? Can you see my fingers ? I'll show them . Let me describe it a different way . Give you , it appeared to me that the things . Uh , I would say we're 3 or 4 inches away from my , my plane , whatever that means , and we're a couple of inches long . Tell us what it means a couple inches long and 3 or 4 inches in front of you and it , uh , it looked like this . Too long for me . See that one up above ? The one up above looks better . How about this ? Uh , probably fairly close . Yeah , I'd say that's probably about as close as the longest one . Let's see , I'm not sure what our , what our scale is here . I , I'd rather say that if I , if I'd consider whatever it may be , but the field of view of , say , my right eye and take a radius of that , that I'd put a streak at , uh , of about , uh , a half the radius would be the average streak . Half or a little longer . Um , OK , uh , you think , is there any way that you can , you can associate this length of straight to what you said too ? The monitor is charging or can yous . Well , it would depend on how big a circle I want to draw from my field of view . I , I , yeah , I saw streaks , uh , that long because uh . Because with my eyes closed , I , I imagine a rather big field of view here in my eye . So , uh , yeah , I'd , I'd see , I'd see streaks that long . And one time you said you saw streaks oriented in a certain direction . Do you remember that ? The way you had it , bring it on up that way . And Ed , what about you ? Well , I think I had them from several directions and I reported them as moving from one direction to the other at that time . There were several of them though . How about , uh , any particular direction up and down , left and right ? I didn't notice any , any preferred orientation . And here again , I think I try to express the , the , uh , the length of the arc of the flash in terms of the , of the peripheral field and if you're talking about a . A horizontal peripheral field as being somewhere in the vicinity of 150 to 160 degrees , then in some , in some cases the light flashes would go across as much as 50 or 60 degrees of that . Yeah , that's interesting . Were the light flashes broken in the center ? In some cases they were . In some cases I had the feeling it was two dots , one immediately following the other , giving the impression of right to left or top to bottom or bottom to top or . The point is , you see that the retina is so curved that if you draw a straight line , you can't get too long , long , you shouldn't be able to get too long a streak without breaking out of the retina again , you know , in the plane of the retina because it's shaped like that , but it has some depth , does it not ? Had it been any longer than that , uh , it just is , is on the retina . Can't hear that through a couple of portions . Can't hear you . It should not have been in any longer than what I showed you if you just went through the retina as one track , but if it went through a couple of eyes , then you'd have the impression of a long streak . That's why we're interested in the character . I have one more about the cloud that you saw . This is a new phenomenon which we hadn't expected . Can you describe this lightning behind the cloud ? Then I think it occurred . I reported it a couple of times , and it appeared , as I recall , to be down low on one eye or the other , and it was just a , a diffuse lighting . Any color ? White , silver . If you were out in the country and looking at the horizon and there was lightning behind a cloud , was it like that ? Except generally if you do that you can see a streak behind the cloud . This , there was no streak . It was just a diffuse lighting simulators when they get out . We , we have a little gizmo that'll simulate that sort of phosphene when you , when you get , get , when you get out of the , out of , out of quarantine , maybe have a look at it . I have one last attempt to try to do the cloud here . You douse the lights a minute . Good job . Oh yeah , they still we . Was it anything like that ? I didn't see it . It's pretty cloudy , right ? They have not darkened that , but I still don't see it . Um , I haven't seen anything on it yet . OK . I'll get it . OK . But what you're trying to describe is just what we used to call heat lightning as a . Yeah . As a kid . Uh yeah , it's a general , uh , diffused light . Yeah . You didn't see the relief of the cloud , did you ? Uh , no , not necessarily , no . It's just a , just a blob of light . The um one final question we did voice up to your question about um whether you you noticed any other uh sensations besides flashes , which was the reason for asking that was that if it was uh you know did you feel any tingling or or find yourself twitching or or hear anything . And the reason for that is that if it is an interaction back in the brain , then then your other senses are just about as sensitive as your visual sense and maybe you should feel something , but you never noticed that it didn't notice it . Didn't notice any sensation , but there's there's two things to think about . Did you notice your , your thumb itching or your lips twitching ? In particular , in particular . No , never looked for it either . Well , it's , you know , these are suggestive questions and the fact that you say no is , uh , significant . You can press on with different parts of the anatomy and you might get a yes , but . Anything to do with . Well , those are . Those are the two biggest cross sections for . I , I , I , you know , if there's something significant about your thumbs or your lips , uh , you ought , maybe you should warn , uh , people to look for that , uh , because , uh , I don't know , unless it's going to be so obvious that , that , if you would . Are you seeing itch all over ? Well , sometimes you might think you should be , feel very comfortable . OK , we , we're in . Thanks very much . So I think um I think I said to Ed yesterday that you really did provide a an enormously improved metadata on this phenomenon that we've had in any previous flights , that's great . Well , I would , I would add this to that , I think that's the way you really have to go is to take a definite period , set it aside and do it because otherwise it's so random and uh so many other things going through your mind that uh . It's the only way you gaining quantitative , however , you , you did a remarkable job of concentrating on it for that length of time . Uh , do you , do you , uh , feel that that was being unreasonable to ask you to do that without you going to sleep or something like that ? No , it's a pretty boring thing to do , you're sitting there lying watching them . You think we , you know , we should be , uh , that we're that in planning for , for doing this sort of thing on future missions that we should be , uh , we shouldn't try and do much more than we try to , to , to get you to do because it's just too much just to sit there lying there trying to concentrate for that length of time . Well , if you can find a time period during the flight when , uh , when they have , when the kids don't have anything else to do , I think it's reasonable to suggest that , yeah . Uh-huh . I don't think I would do it , uh , before a sleep period or when they're tired or they'll go to sleep on you . Yeah , you know , I think along that line , Phil , by the time you've , if you , you know , talk a little bit pre-flight like we did , then , uh , and then you know the phenomena is there because , you know , your first sleep period or the first time you get the spacecraft dark and close your eyes , you're going to see flashes and , uh , so then that , you know , sort of sparks your curiosity a little more and then when they say let's settle down and , and count them , well , I think you're agreeable to it . Um . You OK ? One other comment on that , and I'm not even sure that it's related , but I really think that this is just a general impression that if I would look at look at the glove or the wristwatch or something like that and then close my eyes again , I'd almost always see a flash , and I tried then to correlate looking at say a crack through the . Through the window shade or looking at my watch or something and then closing my eyes and I really came to the impression that the 2 may have been correlated , but I never really looked at it enough to To say that for sure , but I think there was a correlation between seeing a light or something like this and then closing your eyes , and pretty soon you'd pick up that flash . That's , that's an important observation . If the action is directly in the bipore or the retina cells , the outer segment , you might expect it to behave the way electrical phosphenes do rather than than just from light , which takes dark adaption . What do you think about that , Ed ? I'm not quite sure what your point is . I was going to make the comment that , uh , with respect to the flashes . Putting the flashlight in my eyes did not seem to destroy my dark adaptation . Uh , now what that means I don't know . Did you do like that ? Yeah , that slow or that fast ? Yeah , for some time . You certainly wiped out some of the nerves . I wiped out something . I wiped it all out . I'm not sure that's true , Chuck . How , how long did you do it ? You should wipe it all out . Uh , oh , a couple of minutes , 1 minute , 1 minute back and forth like this , about 5 seconds per track something like that . Yeah , hey , hey , you know , I , I know what you're saying though is that the reason you think you didn't knock it all out is because you can still see the flashes . Is that what you're saying ? Well , the cockpit looked different . Remember , I was doing this eyes open and , uh , it seemed like . With just what I consider dark adaptation that I was more dark adapted . Uh , that I dark adapted much sooner after doing that than I did when we started the experiment . Yeah , you would , I , yeah , yeah , sure , yeah , that you would do because you wipe out the cubs less with that just with the flashing you do with the tungsten light or something else . Hey , I'd , I'd like to make sure on this dark adaptation now I know during the , uh , during the formal , uh , 1 hour or 40 minutes , whatever it was that Ed was was shining the light , but I don't know whether you picked it up on air to ground or not , but I had done that prior to that during one of the sleep periods and there's there's just , you do not have to be dark adapted to see these beau . I think that's a conclusion from what Ed's . That's a very significant data point because it almost certainly proves that it's not a real light in your eye generated in your eye . It's actually an interaction . Yeah , but why did it take us so long when we started the experiment before we saw anything ? It was quite a while . And yet when I wiped the light across my eyes within 30 or 40 seconds , there they were again . 17 minutes . Pardon , 17 minutes . Yeah , but when I did it with the flashlight within 30 or 40 seconds they were right there again . You said that they were fainter . They seemed fainter than they had on previous previous times that you'd observed them , and there definitely is a threshold effect of some sort because you saw twice as many during that period as the other two did . And I think maybe it's just my guess was when I , when you didn't see them and then you started to see them regularly , was that it was just that they are fainter , they seem fainter than you expected , and so it took you a while to sort of get your attention down to to to to fainter ones than what you were looking for . Well , that may be that may be the case , except they did indeed appear fainter in the beginning . And it wasn't a matter of of looking for fainter objects . They were brighter after , after a while . And for you , Al , and they didn't diminish in brightness when I did the flashlight across my eyes . They were still just as bright 30 seconds later as they had been before I used the flashlight . And that's why I'm questioning the dark adaptation bit . I . Either I didn't wipe the dark adaptation out , or there is something related to dark adaptation that influences the phenomenon . I don't understand it . It doesn't make sense . That doggone time period that we did it and and the few flashes we saw was very surprising to me , and , and we talked about this and we commented on it at the time . Boy , it seemed like , you know , you'd wake up during a sleep period . And they were all over the place . Now here again , maybe I'd lose track of time , you know , you're laying there in the dark cabin and maybe it was longer than what I thought , but it just seemed like that , you know , there's abundance of flashes , and I was amazed when it took 17 minutes to see a flash . I thought any time that you wanted to close your eyes you were going to and concentrate on it , you were going to , you were going to see these things . That's why I suggest that you really ought to set a time period aside because it is such a random function as far as I'm concerned that . To try to do it , uh , on a non-quantitative basis is off the top . plus the fact that I think that , uh , That each individual is going to report at different , uh , levels of activity too . I had a feeling there was maybe some little faint things that I would sort of see that I didn't want to talk about because I couldn't define them as a flash . Yeah , I had those too . So , uh I , I think , I think also it's a good idea to do it this way because you're subjective , Your impression is not necessarily right . Like you felt that you were , you saw more of them in your left eye than your right , and that wasn't true . It was wrong . So we need to get the data real time . When you go to sleep at night , do you see any of these things ? Most people do see something as they're going to sleep in a darkened room . They can't get to sleep right away down here . Uh , I think everybody does . I don't know . Yeah , you , you , you got lights blinking around , you know , in your eyes if you get in a real dark room occasionally , but , uh , and , and maybe it's because we've never really concentrated on looking for this particular type of phenomenon . These phenomena that you saw were different from the ones that you , you see once in a while . Oh , definitely . It's a lot more frequent . Yeah . No question about that . How about in brightness ? About what ? Right . It's hard to say . Yeah , I guess we'll , I'll , I'll make a note to , to , to see if I see any of those , you know , uh , from here on , uh , but I certainly haven't since we've been back , uh , but here again , and , and Ed mentioned this , and I , and I agree with him , but it's another subjective thing that the flashes you see when you wake up in the middle of the night as a whole appear to be brighter than the flashes as a whole during that experiment that we did . During the during the day . And , and I'm like , I , I was a little reluctant to call anything except a very positive flash during that during that time frame . You know , I wanted to make really sure that that was indeed . A mark at the time that I called it , but those that you saw during the middle of the night appeared to be brighter and like I say , appeared to be more of them . But here again , you know , you may lay there for an hour and you think it's 55 , 10 minutes or something . I don't know . Maybe , maybe you lose track of the time , but It's a subjective thing . It saw one blue flash . Did anyone else see color ? No . Uh , wait a minute . No , that wasn't blue . It was a , a silver . A blue white sort of like a blue diamond , you say like a blue diamond was that the brightest that you saw ? I don't recall it was the brightest , no . Ha , has , has anybody been hit in the head and seen stars you were these anything like that ? Yeah , I think I'm more concentrating on the pain . When you , when you go to bed tonight , if you in a dark room , if you just knuckle your eyeballs , you should see flashes , and it might be worth trying that to see whether they look like the same sort of , we cry a lot in here . OK , no , I'll say , you know , if you can get the next cruises interested , uh , Phil , you know it makes a great topic of conversation , and , you know , during the flight you've got nothing else to talk about . You can talk about light flashes , so you know I think if you get the get the crew's curiosity aroused , boy , it's a good deal . Well , I think the , the pressure on the subject which has built up is such that there will be some formal experiment on the way to go . OK . Thanks very much . Thank you . Thank you . We're all good . Now we'll , we'll keep back in touch with you and let you know what we're gonna do with this other thing and what we're gonna do , how things are coming time wise for the . for the for the tolling , you know , you know what the , the date is , you know what the time is now ? 0 7:31 on Saturday the . Oh . Is it a release time you mean ? Yeah . Work on springing this early , Chuck . Somebody said that , uh , 21 days ended up on Saturday morning , yeah . Yeah . I would've been led to believe otherwise , Chuck . In the debriefing plan , it says 0800 the 26th on Friday . Deke says we get out , uh , uh , Friday morning . Yeah , he , he called yesterday . Yeah , he called me last night . He says , How the hell did we ever get this number in here ? I said , I don't know where you got that number , but well , the radiation people are here . We're talking about release and all that kind of business . Can we get a hack on when they're going to get total body counts ?