File:Surveyor 1 SP-168 p52a.jpg

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Summary

DescriptionSurveyor 1 SP-168 p52a.jpg	English: In reference to the mosaic view..., A. R. LUEDECKE, then Deputy Director, Jet Propulsion Laboratory, wrote, "The ridge of surface material pushed up during landing by the outward motion of the footpad, 12 inches in diameter, is well outlined by shadow, for the Sun was approximately 10° above the horizon when the pictures in the mosaic were taken. The contrast in texture and albedo between the undisturbed surface and that disturbed by the footpad is noticeable, particularly above the footpad. Both of these features indicate that the lunar surface material at the Surveyor I site is not hard rock but a structure disturbed appreciably when subjected to the rather low loads of the order of 5 pounds per square inch.
Date	1968
Source	EXPLORING SPACE WITH A CAMERA, Section 2, To the Moon and Beyond, Special Publication 168 (SP-168), Compiled and Edited by Edgar M. Cortright, Scientific and Technical Information Division, OFFICE OF TECHNOLOGY UTILIZATION, NATIONAL AERONAUTICS AND SPACE ADMINISTRATION. Washington, D.C., 1968
Author	NASA

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