Question

ground up rock on the moons surface *
regonox
regolith
solstice
ecliptic

Explanation:

Regolith is the layer of loose rock fragments, dust, and soil that covers the surface of celestial bodies like the Moon. It is formed by the impact of meteoroids, micrometeoroids, and solar wind erosion over time. Regonox is not a recognized term in lunar geology. A solstice is an astronomical event related to the tilt of a planet's axis. The ecliptic is the apparent path of the Sun across the celestial sphere.

Answer:

regolith