Tenuous Surface Layer on the Moon: Evidence Derived from Radar Observations

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Science  26 Nov 1965:
Vol. 150, Issue 3700, pp. 1153-1156
DOI: 10.1126/science.150.3700.1153


By radar backscattering, observations of the moon have been made which show a systematic difference between the backscattering coefficient of waves polarized in, and perpendicular to, the local plane of incidence. The results arein agreement with a model consisting of a tenuous top layer at least 10 centimeters thick, supported by a denser underlying layer.