Published May 21, 2013 at 500 × 727 in UA Mars Camera Reveals Hundreds of Impacts Each Year Images taken by the UA-led High Resolution Imaging Experiment, or HiRISE, reveal new impact craters that formed between 2010 and 2011. (Photo by: NASA/JPL-Caltech/MSSS/UA) (Visited 7 times, 1 visits today)