Nearly the entire lunar surface is covered with regolith, and bedrock is only visible on the walls of very steep craters. The Moon regolith was formed over billions of years by constant meteorite impacts on the surface of the Moon. ... The reason for this is because lunar regolith is sharp and jagged.

Why is Moon dust called regolith?

Scientists are beginning to call this loose icy material regolith because of the mechanical similarity with regolith on other bodies, although traditionally (and etymologically) the term had been applied only when the loose layer was composed of mineral grains like quartz or plagioclase or rock fragments that were in ...

How was the lunar regolith formed?

On the Moon, regolith occurs as a mixture of powdery dust and broken rock. Lunar regolith is formed by the impact of meteorites on the body's surface. The force of the collision melts some of the impacted regolith to form objects known as agglutinates and heaves debris (ejecta) outward from the point of impact.