The gray area in center of this image is where the Dust Removal Tool on NASA Mars rover Curiosity brushed a rock target called Wernecke. The brushing revealed dark nodules and white veins crisscrossing the light gray rock.
The gray area in center of this image is where the Dust Removal Tool on NASA Mars rover Curiosity brushed a rock target called Wernecke. The brushing revealed dark nodules and white veins crisscrossing the light gray rock.