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Visual light flash phenomenon, part CThe Apollo 16 mission provided the opportunity to obtain additional data on the characteristics and frequency of the light flashes and also provided the first opportunity to obtain a direct physical record of incident cosmic ray particles with the Apollo light flash moving emulsion detector (ALFMED). The ALFMED is an electromechanical device that is worn on the head like a helmet and supports cosmic radiation-sensitive emulsions around the head of the test subject. Two light flash observation sessions were conducted during the mission: one during translunar coast and the second during transearth coast. Characteristics of the light flashes observed and reported by the Apollo crew members were generally similar to those reported on previous missions. Analyses of the ALFMED emulsion plates are proceeding as scheduled, although results are not yet available. The ALFMED results should provide conclusive evidence establishing the correlation, if any, between the incident cosmic ray particles and the perception of light flashes as reported by Apollo crew members.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Benson, R. E.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Pinsky, L. S.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1972
Publication Information
Publication: Apollo 16 Prelim. Sci. Rept.
Subject Category
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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