关于这张图
The downward-looking navigation camera aboard NASA's Ingenuity Mars Helicopter took this image of the rotorcraft's shadow on the surface of Jezero Crater during helicopter's second experimental test flight on April 22, 2021. The helicopter's navigation camera autonomously tracks the ground during flight. The Ingenuity Mars Helicopter was built by JPL, which also manages this technology demonstration project for NASA Headquarters. It is supported by NASA's Science Mission Directorate, Aeronautics Research Mission Directorate, and Space Technology Mission Directorate. NASA's Ames Research Cente…