关于这张图
This annotated image from NASA's Perseverance Mars rover shows how its SHERLOC (Scanning Habitable Environments with Raman and Luminescence for Organics and Minerals) instrument investigates a rock surface. After an area has been ground down by the abrasion tool on the rover's arm, SHERLOC fires its laser in a grid pattern, shown here with blue dots. This scan area is roughly the size of a pencil eraser. SHERLOC's laser allows scientists to see how light interacts with the rock surface and reveals different components in the rock, including chemicals, minerals, and organic matter. The image …
