Lunar Glass: Interferometric Evidence for Low-Temperature Shock

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Science  12 May 1972:
Vol. 176, Issue 4035, pp. 671-673
DOI: 10.1126/science.176.4035.671


Glass objects in the fines from the Apollo 11 and Apollo 12 missions are shown, by two-beam reflection interferometry, to have been subject to shock at temperatures below the melting or softening point of the glass. Possible causes for the glass fragmentation are discussed.