Water on Mars is a topic of research focusing on the presence, history, and potential future of water on the planet Mars. Scientists have found evidence of liquid water in the past, including river valleys, lake beds, and polar ice caps. The discovery of water on Mars has implications for understanding the possibility of past life on the planet and for future human exploration missions. Current research is also exploring the potential sources of water, such as underground aquifers or possible subsurface ice reservoirs. Understanding the distribution and properties of water on Mars is crucial for unlocking the planet's history and potential habitability.