关于这张图
This image of Rabe Crater and the region around it was collected using the IR (infrared) camera. The brighter the material, the warmer the surface is. Most dunes on Mars are dark in visible wavelengths and bright in infrared. The majority of large craters in the southern hemisphere contain dunes on the crater floor. Orbit Number: 67144 Latitude: -46.329 Longitude: 34.079 Instrument: IR Captured: 2017-02-01 12:57 http://photojournal.jpl.nasa.gov/catalog/PIA21519
