NASA rovers are robotic vehicles designed to explore the surface of other planets, primarily Mars. These rovers are equipped with various scientific instruments to analyze soil, rocks, and the atmosphere, helping scientists gather data about the planet's geology and potential for past life. Some of the most notable NASA rovers include Spirit, Opportunity, and Curiosity. Each rover has unique features and capabilities, such as cameras for taking images and tools for conducting experiments. Their missions have significantly advanced our understanding of Mars and its environment.