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Published August 15, 1968 | Published
Journal Article Open

The density of the lunar surface soil


Until the landing of the Surveyor 1 spacecraft on the moon, it had been inferred from earth-based optical, thermal, radio, and radar observations that the surface f the moon consisted of material of low-bulk density (less than 1 g/cm^3) and high porosity. Recently, a change in this belief, at least with respect to the optical data, has occurred, although a low density continues to be postulated on the basis of radiometric data.

Additional Information

Copyright 1968 by the American Geophysical Union. (Received April 11, 1968.) I am indebted to L. D. Jaffe of the Jet Propulsion Laboratory for giving me a copy of the Cherkasov et al. [1967] paper.

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August 19, 2023
October 18, 2023