mollisol: Soil order in USDA soil taxonomy, characterized by a thick organic matter enriched surface horizon, typically between 60–80 cm thick, which are commonly formed under grassland vegetation.

A grey or light-coloured 'E' horizon is the result of severe leaching, or eluviation, which washes out everything but quartz grains. Eluviation is the removal of soil, clay, silt or fine organic ...

Firefly Aerospace’s lander reached lunar soil early Sunday morning ... dust levitates due to solar influences and creates a lunar horizon glow,” Firefly writes in a statement.