Mars: The Pristine Beauty of the Red Planet

NASA's Mars Reconnaissance Orbiter (MRO) has been orbiting Mars since 2006. Onboard the spacecraft is the High-Resolution Imaging Science Experiment (HiRISE) camera, led by Professor Alfred McEwen from the University of Arizona’s Lunar and Planetary Laboratory. The HiRISE camera can image features as small as a desk, giving unprecedented details of Mars. Over 50,000 large (giga-pixel) images have been taken, revealing the diverse and changing landscapes of Mars. Dr. McEwen talks about what scientists have learned from these images.