Gemini 4 Experiment Debriefing, 1967

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.

..
Zodiacal Light
~ Jae Divitt and ,hite ,ere taking 16 rnti. movies DK1u:d;i1Q5
be.fore one11 capsule da m11 when they noic d ttie zodiacal light and described
it u thus , "it was a shaft of light and a long tine before the sun came up. 11
On the ,round observ rs can note tho cone tot light in the eastern sky or
•western sky after the sun has set and gone down about 18 de~~ ( about and hour
after sunset or an hour before sunri e.) Pilots t 40,000 feet o~n follo it for
a lon1er span since they are , rray from disturbing city lights •
\Condition of tho ii.do \\
The G....nrlni optical window is quite superior to tho Jrcury indo,,. None-
~
the less the pilots note that 11both their windows ere fog YJ" nd at one
point durin~ EVA ,hite :rubbed his sleeve accid nt·-lly on JirllSs, ~dow
d~~na it - probably parti lly rcmvlinr the silicon ·D.m.smu -~-o