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Gemini 4 Experiment Debriefing, 1967

National Aeronautics and Space Administration · 1965 · 224 pages · text from the file's own layer

This NASA file from 1965 combines Mission Operation Report M-913-65-04 on the Gemini 4 (GT-4) flight with related correspondence. Memoranda from the Associate Administrator for Manned Space Flight describe the planned four-day mission with James McDivitt and Edward White, including a spacewalk, a rendezvous with the booster second stage and thirteen experiments. Later letters and telegrams from NASA's Manned Space Science office concern the astronaut debriefing and requests for GT-4 photography and film for scientific analysis.

From the source:Release of 2026-06-12 Incident: June 3-7, 1965, Low Earth Orbit. 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.

  • p. 79 …I am rtL)t tal king about any .strange par Licles t hat appeared..... /\nd 11…
  • p. 91 …Are you t a king about micro-,eteor.i tes striki ng the No, I 'm…
  • p. 102 …befor e when you were t al king ab out the dayglow of what conclusion you…
  • p. 135 …said a hand-held gauge was wo1·king. Ground Control said the temperature reading made from…
3Belt 18
I think you ' r drawing improper conclus ions .
o. K .
I don ' t see why you say that the seeing condition s i n the daytime
were extr emely poor .
In t erms of visual accuity, for looking , for example at stars, -
Well , how ab out for tur ning down &nd looking at objects on the
gronn ..
Now that ' s visual acc11 ' Ly , also .
Yes .
And ·1 thoup;ht it was oulstanding .
Looking a L br ight obj ects , you ::,ee . Where you don ' t have a high
contrast required .
You mean on the ground they ' r e br ight , yes .
The n ther e is a high contrast required on the ground . If you ' re
l ooking out at a star, you know , you 've got a bright star against a
black sky . That ' s pr etty high contrast . The same thing l ooking
down at the ground . You ' re . ooki ng at a white road going across
a u:rk. fi0 Id . Yo1 can e those 1.hi.ne;s .
Y s , lrnt. t,IH' only :prohlem h re •i Lhat you 're l ooking thro gh a
ha:G • o r n ·cattered lay r of ljght. ...... scattering illto the space-
crafi. or on Lhe window . For instance, the case if there's no
scat.t. red (frost) on th spacec r a When tha disappears at
nighL you can •·ec directly througl1 the window and yot r visual
sensitivity goes up Lo a maxim m o:f (phot ogr aphication ) .
Whict1 obvious y must have happened because o the way things were .
Lei.. me t. 11 yoll what I think . I .link there are so many things
.he layer on the

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Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 224 pages are in the text index: search them above, or from the library's search.