Summary
This excerpt from the January 4, 1973 Apollo 17 Technical Crew Debriefing records Lunar Module Pilot Harrison Schmitt's report of seeing light flashes almost continuously when dark-adapted throughout the flight. He noted one flash that seemed to be on the lunar surface and observed that the flashes ceased only while he wore blindfolds for a vision experiment.
Detail
Apollo 17 was the ninth crewed U.S. mission to the Moon and the sixth to land astronauts on the lunar surface. This document is an excerpt from the Apollo 17 Technical Crew Debriefing, dated January 4, 1973, in which Lunar Module Pilot Harrison Schmitt reported seeing light flashes.
Schmitt stated that the flashes occurred almost continuously throughout the flight whenever he was dark-adapted, including one he thought was a flash on the lunar surface. He noted that during the period when the crew wore blindfolds for the Apollo Light Flash Moving Emulsion Detector (ALFMED) experiment there were no visible flashes, but that he began seeing them again that night before sleeping.
The document was released through the PURSUE declassification.
