火星壁纸
by JPL-Caltech/MSSS/LANL/Photon Systems/CIW/University of Pittsburgh
NASA Image Library · 公有领域（Public Domain）
关于这张图
NASA's Perseverance Mars rover used its WATSON (Wide Angle Topographic Sensor for Operations and eNgineering) camera to take eight images – combined here into the single composite image – of a rock abraded by a tool on the rover's robotic arm. The images were taken on Aug. 27, 2021 (the 185th Martian day, or sol, of the mission). Nicknamed "Bellegarde," the abraded target is 0.4 inches (5 centimeters) in diameter. A subsystem of SHERLOC, WATSON can document the structure and texture within a drilled or abraded target, and its data can be used to derive depth measurements. The area within the …
