Fig. 3From: Regolith behavior under asteroid-level gravity conditions: low-velocity impact experimentsOptical and scanning electron microscope (SEM) pictures of the simulants used in COLLIDE and PRIME experiments. a Quartz sand and b JSC Mars-1 and c JSC-1 lunar simulants. The samples were prepared in the same manner as for the experiments, by sieving the different grains to below 250 μm. d shows the details of the surface texture of JSC-1 grainsBack to article page