Apollo 11 interior cabin light flashes

Source: NASA-UAP-D4, Apollo 11 Technical Crew Debriefing, 1969
During the Apollo 11 mission, crew member Aldrin observed unexplained flashes of light inside the darkened cabin, occurring roughly once per minute, which he speculated might be cosmic particles or some form of penetration phenomenon.
“ALDRIN: 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 and I didn't think too much about it other than just note in my mind that they continued to be there. I couldn't explain why my eye would see these flashes.”
Verbatim from NASA-UAP-D4, Apollo 11 Technical Crew Debriefing, 1969 · View original on war.gov
Case details
- Date
- 1969-07-01
- Precision
- month
- Location
- Apollo 11 Command Module interior
- Branch
- NASA
- Unit
- Apollo 11 Mission, MSC
- Sensors
- eyewitness
- Shape
- flashes of light; sometimes single, sometimes double flashes separated by about a foot
Resolution
Crew speculated it could be neutron or atomic particle radiation, cosmic radiation, or static electricity, but no definitive conclusion was reached.
Source document
Agency: NASA
File: NASA-UAP-D4, Apollo 11 Technical Crew Debriefing, 1969
Case ID: UNDATED-NASA-6F3A3E
View original on war.gov →Extracted via LLM. Verbatim excerpt validated.