关于这张图
Perseverance's Sampling and Caching System Camera, or CacheCam, captured this time-lapse series of images of the rover's 14th rock-core sample. Taken over four Martian days (or sols) – on Sols 595, 599, 601, and 604 of the mission (Oct. 22, Oct. 26, Oct. 28, and Oct. 31, 2022) – they document the results of the mission's use of the rover's Bore Sweep Tool to remove dust from the tube. Small dust grains can be seen moving around the rim of the sample tube. The tool is designed to clean the inner surface near the tube's opening and also move the collected rock sample further down into the tube. …
