Luna 9 Photographs: Evidence for a Fragmental Surface Layer

Science  26 Aug 1966:
Vol. 153, Issue 3739, pp. 985-988
DOI: 10.1126/science.153.3739.985


The morphological features of the lunar surface photographed by Luna 9 indicate a surficial layer of weakly cohesive to noncohesive frag mental material. Most of this material is finer than a centimeter and probably finer than a few millimeters, although objects of centimeter size and larger are plentiful.