Spring has arrived in the northern hemisphere of Mars, NASA reports. Observations from the HiRISE camera on board the Mars Reconnaissance Orbiter have already
In winter, the dark sand dunes are covered with a layer of whiteseasonal ice, which can be seen in the image below. But in fact, the photo captures the beginning of the Martian spring, when the sunny side of the dunes has just begun to thaw.
Bright spots of white frost are clearly visible andare made up of ice, water and carbon dioxide. Dark streaks of sand flow down the slope. This is due to the rapid transformation of frost from ice to gas when the sun heats the dune in spring.
Ice-covered dunes in the Kaiser crater on Mars. Credit: NASA/JPL/University of Arizona
The diameter of the Kaiser crater is 207 km andis located on the Land of Noah west of the Hellas Plain in the northern hemisphere of Mars. This field is one of several sandy areas located on the southern part of the crater floor. The dunes in the photo are created by Martian winds that sweep through the loose regolith inside Kaiser Crater.
High Resolution Imaging Science Experiment -camera installed on board the Mars Reconnaissance Orbiter spacecraft to study Mars. The author of the development is Ball Aerospace & Technologies, led by the University of Arizona and the Lunar and Planetary Laboratory.
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