Apollo 17 Lunar Surface Flash near Grimaldi
1972-12-11·Lunar surface, north of Grimaldi crater·NASA·identified

Source: NASA-UAP-D2, Apollo 17 Transcript, 1972
The Lunar Module Pilot observed a bright flash on the lunar surface north of Grimaldi crater, possibly caused by a small impact, and suggested checking seismometers for confirmation.
“LMP Hey, I just saw a flash on the lunar surface! CC Oh, yes? LMP It was just out there north of Grimaldi. Just north of Grimaldi. You might see if you got anything on your seismometers, although a small impact probably would give a fair amount of visible light.”
Verbatim from NASA-UAP-D2, Apollo 17 Transcript, 1972 · View original on war.gov
Case details
- Date
- 1972-12-11
- Date exactness
- Known to the day
- Location
- Lunar surface, north of Grimaldi crater
- Region
- Moon
- Branch
- NASA
- Unit
- Apollo 17 Lunar Module Pilot
- Sensors
- eyewitness
- Shape
- Flash, bright streak of light
Resolution
Likely caused by small lunar impact producing visible light
Source document
Agency: NASA
File: NASA-UAP-D2, Apollo 17 Transcript, 1972
Case ID: 1972-NASA-95EBDC
View original on war.gov →Quote checked against the original file.
This sighting
Lunar surface, north of Grimaldi crater / 1972
- NASA-UAP-D002.pdf — Written report of this sighting