Say cheese! Mars’ ‘Happy Face’ crater has significantly grown over a decade due to thermal erosion
Mars has something to smile about! The infamous ‘Happy Face’ crater near the Red Planet’s south pole has gotten noticeably bigger over the last decade. NASA‘s Mars Reconnaissance Orbiter first recorded the grinning visage in 2011, using its powerful High-Resolution Imaging Science Experiment (HiRISE) camera. Researchers compared an image of the crater from October 2011 to … Read more