Luna 9 photographs - Evidence for a fragmental surface layer.
Luna IX photographs indicate lunar surface composition of weakly cohesive poorly sorted fragmental material of unknown source
LUNIK IX LUNAR PROBE↗
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Luna IX photographs indicate lunar surface composition of weakly cohesive poorly sorted fragmental material of unknown source
Landing dynamics analysis of ability of Moon surface to support Luna IX landing capsule
Photographic evidence from Luna IX indicating Moon may have surface made up largely of fine rock particles
Lunar surface interpretation based on Luna IX AND Surveyor I photographic data
Lunar surface according to Luna IX and Surveyor I