HiRISE (High Resolution Imaging Science Experiment) is a camera on board the Mars Reconnaissance Orbiter that takes high-resolution images of the Martian surface. These images are used by scientists to study the geology, climate, and atmosphere of Mars, as well as search for signs of past or present life on the planet. The images captured by HiRISE have allowed researchers to create detailed maps of the Martian terrain, study geological features such as impact craters and volcanoes, and track changes in the landscape over time. HiRISE images have also been used to help plan landing sites for rover missions and identify potential sites for future human exploration.