Martian glaciers refer to the expansive ice deposits found on the surface and subsurface of Mars. These glaciers are composed of water ice, carbon dioxide (dry ice), or a combination of both. They are believed to have formed over millions of years through processes such as snowfall and the movement of ice sheets. Studying Martian glaciers is important for understanding the planet's past climate, geology, and potential for supporting life. Scientists use a variety of techniques, including satellite imagery, radar mapping, and rover observations, to study these icy formations. Overall, research on Martian glaciers provides valuable insights into the history and potential habitability of Mars as well as the broader understanding of planetary glaciation processes.