About
This series of images shows carbon dioxide ice sublimating (going directly from a solid to a gas) inside a pit at Mars' south pole. As ice is lost from the steep walls of pits like this, it reforms on nearby flat surfaces. Each frame of the animation was taken by the High Resolution Imaging Science Experiment camera (HiRISE) on NASA's Mars Reconnaissance Orbiter. The images used in this animation were taken between 2007 and 2013. The walls of the pit are about 656 feet (200 meters) across. Animation available at https://photojournal.jpl.nasa.gov/catalog/PIA23238 — NASA JPL · 2019. ABD devlet eseri: kamu mali, ticari islerde de serbestce kullanilabilir.
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