Are there rocks on Deimos

Answer 1

Diemos is a very small irregular shaped moon in comparison to our moon, its only around 15km at its longest. Because its mass is so small, its gravity is also very low, something like 0.04% of the earths. If something hits Diemos, a crater is formed, but the ejected material will generally go back into space rather than fall back to the moon. Close views of the craters do show some debris that has gradually moved back into the hole created, suggesting that the moon is not just one solid lump, but has material loosely held to the surface.