Desert planets are celestial bodies characterized by arid landscapes, minimal water, and extreme temperatures. These planets often have vast stretches of sand dunes, rocky terrain, and limited vegetation. The lack of moisture leads to harsh living conditions, making it difficult for life as we know it to thrive. Examples of desert planets include Mars, which has dry valleys and polar ice caps, and Tatooine, a fictional planet from the Star Wars universe. Both exhibit features typical of desert environments, such as strong winds and significant temperature fluctuations between day and night.