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regolith
(redirected from Lunar dust)

   Also found in: Wikipedia 0.09 sec.

regolith

Surface layer of loose material that covers most bedrock. It consists of eroded rocky material, volcanic ash, river alluvium, vegetable matter, or a mixture of these known as soil.



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They then wouldn't have to contend with lunar dust, which tends to seep into and degrade optical instruments.
Because the moon has no atmosphere and little internal heat, the fine lunar dust has recorded the time line of geologic events--events continually erased from the dynamic surface of the Earth.
I dreaded the possibility of the American flag collapsing into the lunar dust in front of the television camera.
 
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